diff --git a/.tool-versions b/.tool-versions
index a120515..cc78324 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1 +1 @@
-crystal 1.0.0
+crystal 1.4.1
diff --git a/docs/JSON.html b/docs/JSON.html
index a6c8077..b38376a 100644
--- a/docs/JSON.html
+++ b/docs/JSON.html
@@ -3,21 +3,16 @@
 <head>
   <meta charset="utf-8" />
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
-<meta name="generator" content="Crystal Docs 0.34.0">
+<meta name="generator" content="Crystal Docs 1.3.2">
 <meta name="crystal_docs.project_version" content="master-dev">
 <meta name="crystal_docs.project_name" content="suzuri">
 
 
+
 <link href="css/style.css" rel="stylesheet" type="text/css" />
 <script type="text/javascript" src="js/doc.js"></script>
 
-<svg class="hidden">
-  <symbol id="octicon-link" viewBox="0 0 16 16">
-    <path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path>
-  </symbol>
-</svg>
-
-  <meta id="repository-name" content="suzuri">
+  <meta name="repository-name" content="suzuri">
   <title>JSON - suzuri master-dev</title>
   <script type="text/javascript">
     CrystalDocs.base_path = "";
@@ -25,6 +20,11 @@
 </head>
 <body>
 
+<svg class="hidden">
+  <symbol id="octicon-link" viewBox="0 0 16 16">
+    <path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path>
+  </symbol>
+</svg>
 <div class="sidebar">
   <div class="sidebar-header">
     <div class="search-box">
@@ -44,7 +44,7 @@ <h1 class="project-name">
     </div>
   </div>
 
-  <div class="search-results" class="hidden">
+  <div class="search-results hidden">
     <ul class="search-list"></ul>
   </div>
 
@@ -150,6 +150,11 @@ <h2>
     Defined in:
   </h2>
   
+    
+      suzuri/json_serializable.cr
+    
+    <br/>
+  
 
 
 
diff --git a/docs/JSON/Serializable.html b/docs/JSON/Serializable.html
index 0159e1c..8187f4e 100644
--- a/docs/JSON/Serializable.html
+++ b/docs/JSON/Serializable.html
@@ -3,21 +3,16 @@
 <head>
   <meta charset="utf-8" />
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
-<meta name="generator" content="Crystal Docs 0.34.0">
+<meta name="generator" content="Crystal Docs 1.3.2">
 <meta name="crystal_docs.project_version" content="master-dev">
 <meta name="crystal_docs.project_name" content="suzuri">
 
 
+
 <link href="../css/style.css" rel="stylesheet" type="text/css" />
 <script type="text/javascript" src="../js/doc.js"></script>
 
-<svg class="hidden">
-  <symbol id="octicon-link" viewBox="0 0 16 16">
-    <path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path>
-  </symbol>
-</svg>
-
-  <meta id="repository-name" content="suzuri">
+  <meta name="repository-name" content="suzuri">
   <title>JSON::Serializable - suzuri master-dev</title>
   <script type="text/javascript">
     CrystalDocs.base_path = "../";
@@ -25,6 +20,11 @@
 </head>
 <body>
 
+<svg class="hidden">
+  <symbol id="octicon-link" viewBox="0 0 16 16">
+    <path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path>
+  </symbol>
+</svg>
 <div class="sidebar">
   <div class="sidebar-header">
     <div class="search-box">
@@ -44,7 +44,7 @@ <h1 class="project-name">
     </div>
   </div>
 
-  <div class="search-results" class="hidden">
+  <div class="search-results hidden">
     <ul class="search-list"></ul>
   </div>
 
@@ -137,13 +137,11 @@ <h2>
     Overview
   </h2>
 
-  <p>Use <code>require "suzuri/json_serializable"</code> to add
+  <p>Use <code>require &quot;suzuri/json_serializable&quot;</code> to add
 <code>#to_suzuri</code>, <code>#from_suzuri</code> and <code>#from_suzuri_with_timestamp</code>
 methods to all <code><a href="../JSON/Serializable.html">JSON::Serializable</a></code> objects.</p>
-
 <p><strong>Example usage:</strong></p>
-
-<pre><code><span class="k">require</span> <span class="s">&quot;suzuri/json_serializable&quot;</span>
+<pre><code class="language-crystal"><span class="k">require</span> <span class="s">&quot;suzuri/json_serializable&quot;</span>
 
 <span class="k">class</span> <span class="t">Person</span>
   <span class="k">include</span> <span class="t">JSON</span><span class="t">::</span><span class="t">Serializable</span>
@@ -194,6 +192,11 @@ <h2>
     Defined in:
   </h2>
   
+    
+      suzuri/json_serializable.cr
+    
+    <br/>
+  
 
 
 
diff --git a/docs/Suzuri.html b/docs/Suzuri.html
index 930e33d..3349971 100644
--- a/docs/Suzuri.html
+++ b/docs/Suzuri.html
@@ -3,21 +3,16 @@
 <head>
   <meta charset="utf-8" />
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
-<meta name="generator" content="Crystal Docs 0.34.0">
+<meta name="generator" content="Crystal Docs 1.3.2">
 <meta name="crystal_docs.project_version" content="master-dev">
 <meta name="crystal_docs.project_name" content="suzuri">
 
 
+
 <link href="css/style.css" rel="stylesheet" type="text/css" />
 <script type="text/javascript" src="js/doc.js"></script>
 
-<svg class="hidden">
-  <symbol id="octicon-link" viewBox="0 0 16 16">
-    <path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path>
-  </symbol>
-</svg>
-
-  <meta id="repository-name" content="suzuri">
+  <meta name="repository-name" content="suzuri">
   <title>Suzuri - suzuri master-dev</title>
   <script type="text/javascript">
     CrystalDocs.base_path = "";
@@ -25,6 +20,11 @@
 </head>
 <body>
 
+<svg class="hidden">
+  <symbol id="octicon-link" viewBox="0 0 16 16">
+    <path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path>
+  </symbol>
+</svg>
 <div class="sidebar">
   <div class="sidebar-header">
     <div class="search-box">
@@ -44,7 +44,7 @@ <h1 class="project-name">
     </div>
   </div>
 
-  <div class="search-results" class="hidden">
+  <div class="search-results hidden">
     <ul class="search-list"></ul>
   </div>
 
@@ -150,27 +150,13 @@ <h2>
     Defined in:
   </h2>
   
-
-
-
-  
-    <h2>
-      <a id="constant-summary" class="anchor" href="#constant-summary">
-  <svg class="octicon-link" aria-hidden="true">
-    <use href="#octicon-link"/>
-  </svg>
-</a>
-      Constant Summary
-    </h2>
-  
-  <dl>
     
-      <dt class="entry-const" id="VERSION">
-        <strong>VERSION</strong> = <code><span class="s">&quot;1.0.2&quot;</span></code>
-      </dt>
-      
+      suzuri.cr
     
-  </dl>
+    <br/>
+  
+
+
 
 
 
@@ -187,14 +173,14 @@ <h2>
   <ul class="list-summary">
     
       <li class="entry-summary">
-        <a href="#decode(token:String,key:String,ttl:Time::Span?=nil):Token-class-method" class="signature"><strong>.decode</strong>(token : String, key : String, ttl : Time::Span? = <span class="n">nil</span>) : Token</a>
+        <a href="#decode%28token%3AString%2Ckey%3AString%2Cttl%3ATime%3A%3ASpan%3F%3Dnil%29%3AToken-class-method" class="signature"><strong>.decode</strong>(token : String, key : String, ttl : Time::Span? = <span class="n">nil</span>) : Token</a>
         
           <div class="summary"><p>Decodes a Suzuri token.</p></div>
         
       </li>
     
       <li class="entry-summary">
-        <a href="#encode(payload:String%7CBytes,key:String%7CBytes,timestamp:Time=Time.utc,compress_level=3,compress_threshold:UInt64=512):String-class-method" class="signature"><strong>.encode</strong>(payload : String | Bytes, key : String | Bytes, timestamp : Time = <span class="t">Time</span>.utc, compress_level = <span class="n">3</span>, compress_threshold : UInt64 = <span class="n">512</span>) : String</a>
+        <a href="#encode%28payload%3AString%7CBytes%2Ckey%3AString%7CBytes%2Ctimestamp%3ATime%3DTime.utc%2Ccompress_level%3D3%2Ccompress_threshold%3AUInt64%3D512%29%3AString-class-method" class="signature"><strong>.encode</strong>(payload : String | Bytes, key : String | Bytes, timestamp : Time = <span class="t">Time</span>.utc, compress_level = <span class="n">3</span>, compress_threshold : UInt64 = <span class="n">512</span>) : String</a>
         
           <div class="summary"><p>Encodes a Suzuri token.</p></div>
         
@@ -229,16 +215,14 @@ <h2>
         
         def self.<strong>decode</strong>(token : String, key : String, ttl : Time::Span? = <span class="n">nil</span>) : <a href="Suzuri/Token.html">Token</a>
 
-        <a class="method-permalink" href="#decode(token:String,key:String,ttl:Time::Span?=nil):Token-class-method">#</a>
+        <a class="method-permalink" href="#decode%28token%3AString%2Ckey%3AString%2Cttl%3ATime%3A%3ASpan%3F%3Dnil%29%3AToken-class-method">#</a>
       </div>
       
         <div class="doc">
           
           <p>Decodes a Suzuri token.</p>
-
 <p><strong>Examples:</strong></p>
-
-<pre><code><span class="c"># Decode</span>
+<pre><code class="language-crystal"><span class="c"># Decode</span>
 <span class="t">Suzuri</span>.decode(token, <span class="t">KEY</span>) <span class="c"># =&gt; Suzuri::Token</span>
 
 <span class="c"># Decode with a ttl constraint</span>
@@ -256,16 +240,14 @@ <h2>
         
         def self.<strong>encode</strong>(payload : String | Bytes, key : String | Bytes, timestamp : Time = <span class="t">Time</span>.utc, compress_level = <span class="n">3</span>, compress_threshold : UInt64 = <span class="n">512</span>) : String
 
-        <a class="method-permalink" href="#encode(payload:String%7CBytes,key:String%7CBytes,timestamp:Time=Time.utc,compress_level=3,compress_threshold:UInt64=512):String-class-method">#</a>
+        <a class="method-permalink" href="#encode%28payload%3AString%7CBytes%2Ckey%3AString%7CBytes%2Ctimestamp%3ATime%3DTime.utc%2Ccompress_level%3D3%2Ccompress_threshold%3AUInt64%3D512%29%3AString-class-method">#</a>
       </div>
       
         <div class="doc">
           
           <p>Encodes a Suzuri token.</p>
-
 <p><strong>Examples:</strong></p>
-
-<pre><code><span class="c"># Encode</span>
+<pre><code class="language-crystal"><span class="c"># Encode</span>
 <span class="t">Suzuri</span>.encode(<span class="s">&quot;hello world&quot;</span>, <span class="t">KEY</span>) <span class="c"># =&gt; &quot;wB3AKYBaTwJc...&quot;</span>
 
 <span class="c"># Encode with compression disabled</span>
diff --git a/docs/Suzuri/Error.html b/docs/Suzuri/Error.html
index bf8bf59..2467380 100644
--- a/docs/Suzuri/Error.html
+++ b/docs/Suzuri/Error.html
@@ -3,21 +3,16 @@
 <head>
   <meta charset="utf-8" />
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
-<meta name="generator" content="Crystal Docs 0.34.0">
+<meta name="generator" content="Crystal Docs 1.3.2">
 <meta name="crystal_docs.project_version" content="master-dev">
 <meta name="crystal_docs.project_name" content="suzuri">
 
 
+
 <link href="../css/style.css" rel="stylesheet" type="text/css" />
 <script type="text/javascript" src="../js/doc.js"></script>
 
-<svg class="hidden">
-  <symbol id="octicon-link" viewBox="0 0 16 16">
-    <path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path>
-  </symbol>
-</svg>
-
-  <meta id="repository-name" content="suzuri">
+  <meta name="repository-name" content="suzuri">
   <title>Suzuri::Error - suzuri master-dev</title>
   <script type="text/javascript">
     CrystalDocs.base_path = "../";
@@ -25,6 +20,11 @@
 </head>
 <body>
 
+<svg class="hidden">
+  <symbol id="octicon-link" viewBox="0 0 16 16">
+    <path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path>
+  </symbol>
+</svg>
 <div class="sidebar">
   <div class="sidebar-header">
     <div class="search-box">
@@ -44,7 +44,7 @@ <h1 class="project-name">
     </div>
   </div>
 
-  <div class="search-results" class="hidden">
+  <div class="search-results hidden">
     <ul class="search-list"></ul>
   </div>
 
@@ -150,6 +150,11 @@ <h2>
     Defined in:
   </h2>
   
+    
+      suzuri.cr
+    
+    <br/>
+  
 
 
 
diff --git a/docs/Suzuri/Error/DecodeError.html b/docs/Suzuri/Error/DecodeError.html
index 4942fbf..bfc3ba7 100644
--- a/docs/Suzuri/Error/DecodeError.html
+++ b/docs/Suzuri/Error/DecodeError.html
@@ -3,21 +3,16 @@
 <head>
   <meta charset="utf-8" />
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
-<meta name="generator" content="Crystal Docs 0.34.0">
+<meta name="generator" content="Crystal Docs 1.3.2">
 <meta name="crystal_docs.project_version" content="master-dev">
 <meta name="crystal_docs.project_name" content="suzuri">
 
 
+
 <link href="../../css/style.css" rel="stylesheet" type="text/css" />
 <script type="text/javascript" src="../../js/doc.js"></script>
 
-<svg class="hidden">
-  <symbol id="octicon-link" viewBox="0 0 16 16">
-    <path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path>
-  </symbol>
-</svg>
-
-  <meta id="repository-name" content="suzuri">
+  <meta name="repository-name" content="suzuri">
   <title>Suzuri::Error::DecodeError - suzuri master-dev</title>
   <script type="text/javascript">
     CrystalDocs.base_path = "../../";
@@ -25,6 +20,11 @@
 </head>
 <body>
 
+<svg class="hidden">
+  <symbol id="octicon-link" viewBox="0 0 16 16">
+    <path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path>
+  </symbol>
+</svg>
 <div class="sidebar">
   <div class="sidebar-header">
     <div class="search-box">
@@ -44,7 +44,7 @@ <h1 class="project-name">
     </div>
   </div>
 
-  <div class="search-results" class="hidden">
+  <div class="search-results hidden">
     <ul class="search-list"></ul>
   </div>
 
@@ -170,6 +170,11 @@ <h2>
     Defined in:
   </h2>
   
+    
+      suzuri.cr
+    
+    <br/>
+  
 
 
 
diff --git a/docs/Suzuri/Error/DecryptionFailed.html b/docs/Suzuri/Error/DecryptionFailed.html
index f3bdbf5..351becd 100644
--- a/docs/Suzuri/Error/DecryptionFailed.html
+++ b/docs/Suzuri/Error/DecryptionFailed.html
@@ -3,21 +3,16 @@
 <head>
   <meta charset="utf-8" />
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
-<meta name="generator" content="Crystal Docs 0.34.0">
+<meta name="generator" content="Crystal Docs 1.3.2">
 <meta name="crystal_docs.project_version" content="master-dev">
 <meta name="crystal_docs.project_name" content="suzuri">
 
 
+
 <link href="../../css/style.css" rel="stylesheet" type="text/css" />
 <script type="text/javascript" src="../../js/doc.js"></script>
 
-<svg class="hidden">
-  <symbol id="octicon-link" viewBox="0 0 16 16">
-    <path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path>
-  </symbol>
-</svg>
-
-  <meta id="repository-name" content="suzuri">
+  <meta name="repository-name" content="suzuri">
   <title>Suzuri::Error::DecryptionFailed - suzuri master-dev</title>
   <script type="text/javascript">
     CrystalDocs.base_path = "../../";
@@ -25,6 +20,11 @@
 </head>
 <body>
 
+<svg class="hidden">
+  <symbol id="octicon-link" viewBox="0 0 16 16">
+    <path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path>
+  </symbol>
+</svg>
 <div class="sidebar">
   <div class="sidebar-header">
     <div class="search-box">
@@ -44,7 +44,7 @@ <h1 class="project-name">
     </div>
   </div>
 
-  <div class="search-results" class="hidden">
+  <div class="search-results hidden">
     <ul class="search-list"></ul>
   </div>
 
@@ -152,6 +152,11 @@ <h2>
     Defined in:
   </h2>
   
+    
+      suzuri.cr
+    
+    <br/>
+  
 
 
 
diff --git a/docs/Suzuri/Error/MalformedInput.html b/docs/Suzuri/Error/MalformedInput.html
index 427dd18..dc1d00e 100644
--- a/docs/Suzuri/Error/MalformedInput.html
+++ b/docs/Suzuri/Error/MalformedInput.html
@@ -3,21 +3,16 @@
 <head>
   <meta charset="utf-8" />
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
-<meta name="generator" content="Crystal Docs 0.34.0">
+<meta name="generator" content="Crystal Docs 1.3.2">
 <meta name="crystal_docs.project_version" content="master-dev">
 <meta name="crystal_docs.project_name" content="suzuri">
 
 
+
 <link href="../../css/style.css" rel="stylesheet" type="text/css" />
 <script type="text/javascript" src="../../js/doc.js"></script>
 
-<svg class="hidden">
-  <symbol id="octicon-link" viewBox="0 0 16 16">
-    <path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path>
-  </symbol>
-</svg>
-
-  <meta id="repository-name" content="suzuri">
+  <meta name="repository-name" content="suzuri">
   <title>Suzuri::Error::MalformedInput - suzuri master-dev</title>
   <script type="text/javascript">
     CrystalDocs.base_path = "../../";
@@ -25,6 +20,11 @@
 </head>
 <body>
 
+<svg class="hidden">
+  <symbol id="octicon-link" viewBox="0 0 16 16">
+    <path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path>
+  </symbol>
+</svg>
 <div class="sidebar">
   <div class="sidebar-header">
     <div class="search-box">
@@ -44,7 +44,7 @@ <h1 class="project-name">
     </div>
   </div>
 
-  <div class="search-results" class="hidden">
+  <div class="search-results hidden">
     <ul class="search-list"></ul>
   </div>
 
@@ -152,6 +152,11 @@ <h2>
     Defined in:
   </h2>
   
+    
+      suzuri.cr
+    
+    <br/>
+  
 
 
 
diff --git a/docs/Suzuri/Error/TokenExpired.html b/docs/Suzuri/Error/TokenExpired.html
index 6a2658c..25f6847 100644
--- a/docs/Suzuri/Error/TokenExpired.html
+++ b/docs/Suzuri/Error/TokenExpired.html
@@ -3,21 +3,16 @@
 <head>
   <meta charset="utf-8" />
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
-<meta name="generator" content="Crystal Docs 0.34.0">
+<meta name="generator" content="Crystal Docs 1.3.2">
 <meta name="crystal_docs.project_version" content="master-dev">
 <meta name="crystal_docs.project_name" content="suzuri">
 
 
+
 <link href="../../css/style.css" rel="stylesheet" type="text/css" />
 <script type="text/javascript" src="../../js/doc.js"></script>
 
-<svg class="hidden">
-  <symbol id="octicon-link" viewBox="0 0 16 16">
-    <path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path>
-  </symbol>
-</svg>
-
-  <meta id="repository-name" content="suzuri">
+  <meta name="repository-name" content="suzuri">
   <title>Suzuri::Error::TokenExpired - suzuri master-dev</title>
   <script type="text/javascript">
     CrystalDocs.base_path = "../../";
@@ -25,6 +20,11 @@
 </head>
 <body>
 
+<svg class="hidden">
+  <symbol id="octicon-link" viewBox="0 0 16 16">
+    <path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path>
+  </symbol>
+</svg>
 <div class="sidebar">
   <div class="sidebar-header">
     <div class="search-box">
@@ -44,7 +44,7 @@ <h1 class="project-name">
     </div>
   </div>
 
-  <div class="search-results" class="hidden">
+  <div class="search-results hidden">
     <ul class="search-list"></ul>
   </div>
 
@@ -152,6 +152,11 @@ <h2>
     Defined in:
   </h2>
   
+    
+      suzuri.cr
+    
+    <br/>
+  
 
 
 
diff --git a/docs/Suzuri/Token.html b/docs/Suzuri/Token.html
index 1297e98..ed0d9a4 100644
--- a/docs/Suzuri/Token.html
+++ b/docs/Suzuri/Token.html
@@ -3,21 +3,16 @@
 <head>
   <meta charset="utf-8" />
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
-<meta name="generator" content="Crystal Docs 0.34.0">
+<meta name="generator" content="Crystal Docs 1.3.2">
 <meta name="crystal_docs.project_version" content="master-dev">
 <meta name="crystal_docs.project_name" content="suzuri">
 
 
+
 <link href="../css/style.css" rel="stylesheet" type="text/css" />
 <script type="text/javascript" src="../js/doc.js"></script>
 
-<svg class="hidden">
-  <symbol id="octicon-link" viewBox="0 0 16 16">
-    <path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path>
-  </symbol>
-</svg>
-
-  <meta id="repository-name" content="suzuri">
+  <meta name="repository-name" content="suzuri">
   <title>Suzuri::Token - suzuri master-dev</title>
   <script type="text/javascript">
     CrystalDocs.base_path = "../";
@@ -25,6 +20,11 @@
 </head>
 <body>
 
+<svg class="hidden">
+  <symbol id="octicon-link" viewBox="0 0 16 16">
+    <path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path>
+  </symbol>
+</svg>
 <div class="sidebar">
   <div class="sidebar-header">
     <div class="search-box">
@@ -44,7 +44,7 @@ <h1 class="project-name">
     </div>
   </div>
 
-  <div class="search-results" class="hidden">
+  <div class="search-results hidden">
     <ul class="search-list"></ul>
   </div>
 
@@ -152,6 +152,11 @@ <h2>
     Defined in:
   </h2>
   
+    
+      suzuri.cr
+    
+    <br/>
+  
 
 
 
@@ -172,21 +177,21 @@ <h2>
   <ul class="list-summary">
     
       <li class="entry-summary">
-        <a href="#payload:Bytes-instance-method" class="signature"><strong>#payload</strong> : Bytes</a>
+        <a href="#payload%3ABytes-instance-method" class="signature"><strong>#payload</strong> : Bytes</a>
         
           <div class="summary"><p>Returns the decrypted payload as <code>Bytes</code></p></div>
         
       </li>
     
       <li class="entry-summary">
-        <a href="#timestamp:Time-instance-method" class="signature"><strong>#timestamp</strong> : Time</a>
+        <a href="#timestamp%3ATime-instance-method" class="signature"><strong>#timestamp</strong> : Time</a>
         
           <div class="summary"><p>Returns the creation timestamp</p></div>
         
       </li>
     
       <li class="entry-summary">
-        <a href="#to_s:String-instance-method" class="signature"><strong>#to_s</strong> : String</a>
+        <a href="#to_s%3AString-instance-method" class="signature"><strong>#to_s</strong> : String</a>
         
           <div class="summary"><p>Returns the decrypted payload as <code>String</code></p></div>
         
@@ -251,7 +256,7 @@ <h2>
         
         def <strong>payload</strong> : Bytes
 
-        <a class="method-permalink" href="#payload:Bytes-instance-method">#</a>
+        <a class="method-permalink" href="#payload%3ABytes-instance-method">#</a>
       </div>
       
         <div class="doc">
@@ -270,7 +275,7 @@ <h2>
         
         def <strong>timestamp</strong> : Time
 
-        <a class="method-permalink" href="#timestamp:Time-instance-method">#</a>
+        <a class="method-permalink" href="#timestamp%3ATime-instance-method">#</a>
       </div>
       
         <div class="doc">
@@ -289,7 +294,7 @@ <h2>
         
         def <strong>to_s</strong> : String
 
-        <a class="method-permalink" href="#to_s:String-instance-method">#</a>
+        <a class="method-permalink" href="#to_s%3AString-instance-method">#</a>
       </div>
       
         <div class="doc">
diff --git a/docs/css/style.css b/docs/css/style.css
index 20bb084..ebbb892 100644
--- a/docs/css/style.css
+++ b/docs/css/style.css
@@ -84,25 +84,25 @@ body {
 }
 
 .sidebar input::-webkit-input-placeholder { /* Chrome/Opera/Safari */
-  color: #C8C8C8;
+  color: #757575;
   font-size: 14px;
   text-indent: 2px;
 }
 
 .sidebar input::-moz-placeholder { /* Firefox 19+ */
-  color: #C8C8C8;
+  color: #757575;
   font-size: 14px;
   text-indent: 2px;
 }
 
 .sidebar input:-ms-input-placeholder { /* IE 10+ */
-  color: #C8C8C8;
+  color: #757575;
   font-size: 14px;
   text-indent: 2px;
 }
 
 .sidebar input:-moz-placeholder { /* Firefox 18- */
-  color: #C8C8C8;
+  color: #757575;
   font-size: 14px;
   text-indent: 2px;
 }
diff --git a/docs/index.html b/docs/index.html
index 55683df..f283d03 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -3,21 +3,16 @@
 <head>
   <meta charset="utf-8" />
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
-<meta name="generator" content="Crystal Docs 0.34.0">
+<meta name="generator" content="Crystal Docs 1.3.2">
 <meta name="crystal_docs.project_version" content="master-dev">
 <meta name="crystal_docs.project_name" content="suzuri">
 
 
+
 <link href="css/style.css" rel="stylesheet" type="text/css" />
 <script type="text/javascript" src="js/doc.js"></script>
 
-<svg class="hidden">
-  <symbol id="octicon-link" viewBox="0 0 16 16">
-    <path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path>
-  </symbol>
-</svg>
-
-  <meta id="repository-name" content="suzuri">
+  <meta name="repository-name" content="suzuri">
   <title>suzuri master-dev</title>
   <script type="text/javascript">
   CrystalDocs.base_path = "";
@@ -25,6 +20,11 @@
 </head>
 <body>
 
+<svg class="hidden">
+  <symbol id="octicon-link" viewBox="0 0 16 16">
+    <path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path>
+  </symbol>
+</svg>
 <div class="sidebar">
   <div class="sidebar-header">
     <div class="search-box">
@@ -44,7 +44,7 @@ <h1 class="project-name">
     </div>
   </div>
 
-  <div class="search-results" class="hidden">
+  <div class="search-results hidden">
     <ul class="search-list"></ul>
   </div>
 
@@ -118,56 +118,47 @@ <h1 class="project-name">
 
 
 <div class="main-content">
-<h1><a id="suzuri" class="anchor" href="#suzuri">
-  <svg class="octicon-link" aria-hidden="true">
+<h1><a id="suzuri" class="anchor" href="#suzuri">  <svg class="octicon-link" aria-hidden="true">
     <use href="#octicon-link"/>
   </svg>
 </a>Suzuri</h1>
-
-<p><a href="https://github.com/busyloop/suzuri/actions?query=workflow%3ABuild+branch%3Amaster" target="_blank"><img src="https://github.com/busyloop/suzuri/workflows/Build/badge.svg" alt="Build"/></a> <a href="https://en.wikipedia.org/wiki/MIT_License" target="_blank"><img src="https://img.shields.io/github/license/busyloop/suzuri" alt="GitHub"/></a> <a href="https://github.com/busyloop/suzuri/releases" target="_blank"><img src="https://img.shields.io/github/release/busyloop/suzuri.svg" alt="GitHub release"/></a></p>
-
-<p>Suzuri is a secure and easy to use token format that employs  
-<a href="https://doc.libsodium.org/secret-key_cryptography/aead/chacha20-poly1305/xchacha20-poly1305_construction" target="_blank">XChaCha20-Poly1305 AEAD</a> symmetric encryption to create  
-authenticated, encrypted, tamperproof tokens.  </p>
-
-<p>It compresses and encrypts an arbitrary sequence of bytes,  
+<p><a href="https://github.com/busyloop/suzuri/actions?query=workflow:Build+branch:master"><img src="https://github.com/busyloop/suzuri/workflows/Build/badge.svg" alt="Build" /></a> <a href="https://en.wikipedia.org/wiki/MIT_License"><img src="https://img.shields.io/github/license/busyloop/suzuri" alt="GitHub" /></a> <a href="https://github.com/busyloop/suzuri/releases"><img src="https://img.shields.io/github/release/busyloop/suzuri.svg" alt="GitHub release" /></a></p>
+<p>Suzuri is a secure and easy to use token format that employs<br />
+<a href="https://doc.libsodium.org/secret-key_cryptography/aead/chacha20-poly1305/xchacha20-poly1305_construction">XChaCha20-Poly1305 AEAD</a> symmetric encryption to create<br />
+authenticated, encrypted, tamperproof tokens.</p>
+<p>It compresses and encrypts an arbitrary sequence of bytes,<br />
 then encodes the result to url-safe Base64.</p>
-
-<p>Suzuri tokens can be used as a secure alternative to JWT  
+<p>Suzuri tokens can be used as a secure alternative to JWT<br />
 or for any type of general purpose message passing.</p>
-
 <h2><a id="installation" class="anchor" href="#installation">
   <svg class="octicon-link" aria-hidden="true">
     <use href="#octicon-link"/>
   </svg>
 </a>Installation</h2>
-
-<ol><li>Add the dependency to your <code>shard.yml</code>:</li></ol>
-
-<p><code></code>`yaml
-   dependencies:</p>
-
-<pre><code> suzuri:
-   github: busyloop<span class="s">/suzuri</span></code></pre>
-
-<p><code></code>`</p>
-
-<ol><li>Run <code>shards install</code></li></ol>
-
+<ol>
+<li>
+<p>Add the dependency to your <code>shard.yml</code>:</p>
+<pre><code class="language-yaml">dependencies:
+  suzuri:
+    github: busyloop/suzuri</code></pre>
+</li>
+<li>
+<p>Run <code>shards install</code></p>
+</li>
+</ol>
 <h2><a id="documentation" class="anchor" href="#documentation">
   <svg class="octicon-link" aria-hidden="true">
     <use href="#octicon-link"/>
   </svg>
 </a>Documentation</h2>
-
-<ul><li><a href="https://busyloop.github.io/suzuri/Suzuri.html" target="_blank">API Documentation</a></li></ul>
-
+<ul>
+<li><a href="https://busyloop.github.io/suzuri/Suzuri.html">API Documentation</a></li>
+</ul>
 <h2><a id="usage" class="anchor" href="#usage">
   <svg class="octicon-link" aria-hidden="true">
     <use href="#octicon-link"/>
   </svg>
 </a>Usage</h2>
-
 <pre><code class="language-crystal"><span class="k">require</span> <span class="s">&quot;suzuri&quot;</span>
 
 <span class="t">TEST_KEY</span> <span class="o">=</span> <span class="s">&quot;TheKeyLengthMustBeThirtyTwoBytes&quot;</span>
@@ -184,13 +175,11 @@ <h2><a id="usage" class="anchor" href="#usage">
 token_str <span class="o">=</span> <span class="t">Suzuri</span>.encode(<span class="s">&quot;hello world&quot;</span>, <span class="t">TEST_KEY</span>) <span class="c"># =&gt; &quot;(url-safe base64)&quot;</span>
 sleep <span class="n">5</span>
 <span class="t">Suzuri</span>.decode(token_str, <span class="t">TEST_KEY</span>, <span class="n">2</span>.seconds) <span class="c"># =&gt; Suzuri::Error::TokenExpired</span></code></pre>
-
-<h2><a id="usage-with-jsonserializablehttpscrystal-lang.orgapi0.34.0jsonserializable.html" class="anchor" href="#usage-with-jsonserializablehttpscrystal-lang.orgapi0.34.0jsonserializable.html">
+<h2><a id="usage-with-jsonserializable" class="anchor" href="#usage-with-jsonserializable">
   <svg class="octicon-link" aria-hidden="true">
     <use href="#octicon-link"/>
   </svg>
-</a>Usage (with <a href="https://crystal-lang.org/api/0.34.0/JSON/Serializable.html" target="_blank">JSON::Serializable</a>)</h2>
-
+</a>Usage (with <a href="https://crystal-lang.org/api/0.34.0/JSON/Serializable.html">JSON::Serializable</a>)</h2>
 <pre><code class="language-crystal"><span class="k">require</span> <span class="s">&quot;suzuri/json_serializable&quot;</span>
 
 <span class="t">TEST_KEY</span> <span class="o">=</span> <span class="s">&quot;TheKeyLengthMustBeThirtyTwoBytes&quot;</span>
@@ -210,35 +199,33 @@ <h2><a id="usage-with-jsonserializablehttpscrystal-lang.orgapi0.34.0jsonserializ
 
 bob2 <span class="o">=</span> <span class="t">Person</span>.from_suzuri(token_str, <span class="t">TEST_KEY</span>)
 bob2.name <span class="c"># =&gt; &quot;bob&quot;</span></code></pre>
-
 <h2><a id="compression" class="anchor" href="#compression">
   <svg class="octicon-link" aria-hidden="true">
     <use href="#octicon-link"/>
   </svg>
 </a>Compression</h2>
-
-<p>By default Suzuri applies zstd compression before encryption when the  
-payload is larger than 512 bytes. The compression threshold and level  
+<p>By default Suzuri applies zstd compression before encryption when the<br />
+payload is larger than 512 bytes. The compression threshold and level<br />
 can be chosen at runtime.</p>
-
 <h2><a id="contributing" class="anchor" href="#contributing">
   <svg class="octicon-link" aria-hidden="true">
     <use href="#octicon-link"/>
   </svg>
 </a>Contributing</h2>
-
-<ol><li>Fork it (&lt;https://github.com/busyloop/suzuri/fork>)</li><li>Create your feature branch (<code>git checkout -b my-new-feature</code>)</li><li>Commit your changes (<code>git commit -am 'Add some feature'</code>)</li><li>Push to the branch (<code>git push origin my-new-feature</code>)</li><li>Create a new Pull Request</li></ol>
-
+<ol>
+<li>Fork it (<a href="https://github.com/busyloop/suzuri/fork">https://github.com/busyloop/suzuri/fork</a>)</li>
+<li>Create your feature branch (<code>git checkout -b my-new-feature</code>)</li>
+<li>Commit your changes (<code>git commit -am 'Add some feature'</code>)</li>
+<li>Push to the branch (<code>git push origin my-new-feature</code>)</li>
+<li>Create a new Pull Request</li>
+</ol>
 <h2><a id="credits" class="anchor" href="#credits">
   <svg class="octicon-link" aria-hidden="true">
     <use href="#octicon-link"/>
   </svg>
 </a>Credits</h2>
-
-<p>Suzuri is inspired by (but not compatible to) <a href="https://github.com/tuupola/branca-spec/" target="_blank">Branca</a>-tokens. The underlying encryption is identical.  
+<p>Suzuri is inspired by (but not compatible to) <a href="https://github.com/tuupola/branca-spec/">Branca</a>-tokens. The underlying encryption is identical.<br />
 Suzuri adds compression support and serializes to url-safe Base64 instead of Base62.</p>
-
-
 </div>
 </body>
 </html>
diff --git a/docs/index.json b/docs/index.json
index 376cffe..6360309 100644
--- a/docs/index.json
+++ b/docs/index.json
@@ -1 +1 @@
-{"repository_name":"suzuri","body":"# Suzuri\n[![Build](https://github.com/busyloop/suzuri/workflows/Build/badge.svg)](https://github.com/busyloop/suzuri/actions?query=workflow%3ABuild+branch%3Amaster) [![GitHub](https://img.shields.io/github/license/busyloop/suzuri)](https://en.wikipedia.org/wiki/MIT_License) [![GitHub release](https://img.shields.io/github/release/busyloop/suzuri.svg)](https://github.com/busyloop/suzuri/releases)\n\nSuzuri is a secure and easy to use token format that employs  \n[XChaCha20-Poly1305 AEAD](https://doc.libsodium.org/secret-key_cryptography/aead/chacha20-poly1305/xchacha20-poly1305_construction) symmetric encryption to create  \nauthenticated, encrypted, tamperproof tokens.  \n\nIt compresses and encrypts an arbitrary sequence of bytes,  \nthen encodes the result to url-safe Base64.\n\nSuzuri tokens can be used as a secure alternative to JWT  \nor for any type of general purpose message passing.\n\n\n## Installation\n\n1. Add the dependency to your `shard.yml`:\n\n   ```yaml\n   dependencies:\n     suzuri:\n       github: busyloop/suzuri\n   ```\n\n2. Run `shards install`\n\n## Documentation\n\n* [API Documentation](https://busyloop.github.io/suzuri/Suzuri.html)\n\n\n## Usage\n\n```crystal\nrequire \"suzuri\"\n\nTEST_KEY = \"TheKeyLengthMustBeThirtyTwoBytes\"\n\n## Encode\ntoken_str = Suzuri.encode(\"hello world\", TEST_KEY) # => \"(url-safe base64)\"\n\n## Decode\ntoken = Suzuri.decode(token_str, TEST_KEY)   # => Suzuri::Token\ntoken.to_s                                   # => \"hello world\"\ntoken.timestamp                              # => 2020-01-01 01:23:45.0 UTC\n\n## Decode with a TTL constraint\ntoken_str = Suzuri.encode(\"hello world\", TEST_KEY) # => \"(url-safe base64)\"\nsleep 5\nSuzuri.decode(token_str, TEST_KEY, 2.seconds) # => Suzuri::Error::TokenExpired\n```\n\n## Usage (with [JSON::Serializable](https://crystal-lang.org/api/0.34.0/JSON/Serializable.html))\n\n```crystal\nrequire \"suzuri/json_serializable\"\n\nTEST_KEY = \"TheKeyLengthMustBeThirtyTwoBytes\"\n\nclass Person\n   include JSON::Serializable\n\n   @[JSON::Field]\n   property name : String\n\n   def initialize(@name)\n   end\nend\n\nbob = Person.new(name: \"bob\")\ntoken_str = bob.to_suzuri(TEST_KEY)\n\nbob2 = Person.from_suzuri(token_str, TEST_KEY)\nbob2.name # => \"bob\"\n```\n\n\n## Compression\n\nBy default Suzuri applies zstd compression before encryption when the  \npayload is larger than 512 bytes. The compression threshold and level  \ncan be chosen at runtime.\n\n\n## Contributing\n\n1. Fork it (<https://github.com/busyloop/suzuri/fork>)\n2. Create your feature branch (`git checkout -b my-new-feature`)\n3. Commit your changes (`git commit -am 'Add some feature'`)\n4. Push to the branch (`git push origin my-new-feature`)\n5. Create a new Pull Request\n\n## Credits\n\nSuzuri is inspired by (but not compatible to) [Branca](https://github.com/tuupola/branca-spec/)-tokens. The underlying encryption is identical.  \nSuzuri adds compression support and serializes to url-safe Base64 instead of Base62.\n\n","program":{"html_id":"suzuri/toplevel","path":"toplevel.html","kind":"module","full_name":"Top Level Namespace","name":"Top Level Namespace","abstract":false,"superclass":null,"ancestors":[],"locations":[],"repository_name":"suzuri","program":true,"enum":false,"alias":false,"aliased":"","const":false,"constants":[],"included_modules":[],"extended_modules":[],"subclasses":[],"including_types":[],"namespace":null,"doc":null,"summary":null,"class_methods":[],"constructors":[],"instance_methods":[],"macros":[],"types":[{"html_id":"suzuri/JSON","path":"JSON.html","kind":"module","full_name":"JSON","name":"JSON","abstract":false,"superclass":null,"ancestors":[],"locations":[],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"aliased":"","const":false,"constants":[],"included_modules":[],"extended_modules":[],"subclasses":[],"including_types":[],"namespace":null,"doc":null,"summary":null,"class_methods":[],"constructors":[],"instance_methods":[],"macros":[],"types":[{"html_id":"suzuri/JSON/Serializable","path":"JSON/Serializable.html","kind":"module","full_name":"JSON::Serializable","name":"Serializable","abstract":false,"superclass":null,"ancestors":[],"locations":[],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"aliased":"","const":false,"constants":[],"included_modules":[],"extended_modules":[],"subclasses":[],"including_types":[],"namespace":{"html_id":"suzuri/JSON","kind":"module","full_name":"JSON","name":"JSON"},"doc":"Use `require \"suzuri/json_serializable\"` to add\n`#to_suzuri`, `#from_suzuri` and `#from_suzuri_with_timestamp`\nmethods to all `JSON::Serializable` objects.\n\n**Example usage:**\n\n```\nrequire \"suzuri/json_serializable\"\n\nclass Person\n  include JSON::Serializable\n\n  @[JSON::Field(key: \"name\")]\n  property name : String\n\n  def initialize(@name)\n  end\nend\n\nbob = Person.new(name: \"bob\")\ntoken = bob.to_suzuri(KEY)\n\ndecoded = Person.from_suzuri(token, KEY)\ndecoded.name # => \"bob\"\n\n# Decode with ttl constraint\ndecoded = Person.from_suzuri(token, KEY, 5.seconds)\n\n# Decode with timestamp\ndecoded, timestamp = Person.from_suzuri_with_timestamp(token, KEY)\ndecoded.name # => \"bob\"\ntimestamp    # => Time\n\n# Decode with timestamp and ttl constraint\ndecoded, timestamp = Person.from_suzuri_with_timestamp(token, KEY, 5.seconds)\n```","summary":"<p>Use <code>require \"suzuri/json_serializable\"</code> to add <code>#to_suzuri</code>, <code>#from_suzuri</code> and <code>#from_suzuri_with_timestamp</code> methods to all <code><a href=\"../JSON/Serializable.html\">JSON::Serializable</a></code> objects.</p>","class_methods":[],"constructors":[],"instance_methods":[],"macros":[],"types":[]}]},{"html_id":"suzuri/Suzuri","path":"Suzuri.html","kind":"module","full_name":"Suzuri","name":"Suzuri","abstract":false,"superclass":null,"ancestors":[],"locations":[],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"aliased":"","const":false,"constants":[{"id":"VERSION","name":"VERSION","value":"\"1.0.2\"","doc":null,"summary":null}],"included_modules":[],"extended_modules":[],"subclasses":[],"including_types":[],"namespace":null,"doc":null,"summary":null,"class_methods":[{"id":"decode(token:String,key:String,ttl:Time::Span?=nil):Token-class-method","html_id":"decode(token:String,key:String,ttl:Time::Span?=nil):Token-class-method","name":"decode","doc":"Decodes a Suzuri token.\n\n**Examples:**\n```\n# Decode\nSuzuri.decode(token, KEY) # => Suzuri::Token\n\n# Decode with a ttl constraint\nSuzuri.decode(token, KEY, 5.minutes) # => Suzuri::Error::TokenExpired\n```","summary":"<p>Decodes a Suzuri token.</p>","abstract":false,"args":[{"name":"token","doc":null,"default_value":"","external_name":"token","restriction":"String"},{"name":"key","doc":null,"default_value":"","external_name":"key","restriction":"String"},{"name":"ttl","doc":null,"default_value":"nil","external_name":"ttl","restriction":"Time::Span | ::Nil"}],"args_string":"(token : String, key : String, ttl : Time::Span? = <span class=\"n\">nil</span>) : Token","source_link":null,"def":{"name":"decode","args":[{"name":"token","doc":null,"default_value":"","external_name":"token","restriction":"String"},{"name":"key","doc":null,"default_value":"","external_name":"key","restriction":"String"},{"name":"ttl","doc":null,"default_value":"nil","external_name":"ttl","restriction":"Time::Span | ::Nil"}],"double_splat":null,"splat_index":null,"yields":null,"block_arg":null,"return_type":"Token","visibility":"Public","body":"begin\n  raw = Base64.decode(token)\nrescue ex : Exception\n  raise(Error::MalformedInput.new(\"Base64 decoding failed\"))\nend\nbegin\n  timestamp = Time.unix((IO::Memory.new(raw[1..4])).read_bytes(UInt32, IO::ByteFormat::BigEndian))\n  header = raw[0..(Token::HEADER_SIZE - 1)]\n  ciphertext = raw[Token::HEADER_SIZE..-1]\n  nonce = Sodium::Nonce.new(raw[5..(4 + Token::NONCE_SIZE)])\nrescue ex : Exception\n  raise(Error::MalformedInput.new(ex.message))\nend\nbegin\n  cipher = Token::CIPHER.new(Sodium::SecureBuffer.new(key.to_slice))\n  payload = cipher.decrypt(ciphertext, nonce: nonce, additional: header.to_slice)\n  if raw[0] == 129_u8\n    dctx = Zstd::Decompress::Context.new\n    payload = dctx.decompress(payload)\n  end\nrescue ex : Sodium::Error::DecryptionFailed\n  raise(Error::DecryptionFailed.new(ex.message))\nend\nif ttl && (timestamp + ttl) < Time.utc\n  raise(Error::TokenExpired.new(\"Token expired at #{timestamp + ttl}\"))\nend\nToken.new(payload: payload, timestamp: timestamp)\n"}},{"id":"encode(payload:String|Bytes,key:String|Bytes,timestamp:Time=Time.utc,compress_level=3,compress_threshold:UInt64=512):String-class-method","html_id":"encode(payload:String|Bytes,key:String|Bytes,timestamp:Time=Time.utc,compress_level=3,compress_threshold:UInt64=512):String-class-method","name":"encode","doc":"Encodes a Suzuri token.\n\n**Examples:**\n```\n# Encode\nSuzuri.encode(\"hello world\", KEY) # => \"wB3AKYBaTwJc...\"\n\n# Encode with compression disabled\nSuzuri.encode(\"hello world\", KEY, compress_threshold: UInt64::MAX) # => \"xAJyiEKfPLPi...\"\n\n# Encode with a custom creation timestamp\nSuzuri.encode(\"hello world\", KEY, Time.utc(1985-10-26)) # => \"mArTYmcfLyYy...\"\n\n# Encode with a higher compression level. Value can be 1-19. Default is 3.\nSuzuri.encode(\"hello world\", KEY, compress_level: 10) # => \"puI8lSpoAox5...\"\n```","summary":"<p>Encodes a Suzuri token.</p>","abstract":false,"args":[{"name":"payload","doc":null,"default_value":"","external_name":"payload","restriction":"String | Bytes"},{"name":"key","doc":null,"default_value":"","external_name":"key","restriction":"String | Bytes"},{"name":"timestamp","doc":null,"default_value":"Time.utc","external_name":"timestamp","restriction":"Time"},{"name":"compress_level","doc":null,"default_value":"3","external_name":"compress_level","restriction":""},{"name":"compress_threshold","doc":null,"default_value":"512","external_name":"compress_threshold","restriction":"UInt64"}],"args_string":"(payload : String | Bytes, key : String | Bytes, timestamp : Time = <span class=\"t\">Time</span>.utc, compress_level = <span class=\"n\">3</span>, compress_threshold : UInt64 = <span class=\"n\">512</span>) : String","source_link":null,"def":{"name":"encode","args":[{"name":"payload","doc":null,"default_value":"","external_name":"payload","restriction":"String | Bytes"},{"name":"key","doc":null,"default_value":"","external_name":"key","restriction":"String | Bytes"},{"name":"timestamp","doc":null,"default_value":"Time.utc","external_name":"timestamp","restriction":"Time"},{"name":"compress_level","doc":null,"default_value":"3","external_name":"compress_level","restriction":""},{"name":"compress_threshold","doc":null,"default_value":"512","external_name":"compress_threshold","restriction":"UInt64"}],"double_splat":null,"splat_index":null,"yields":null,"block_arg":null,"return_type":"String","visibility":"Public","body":"cipher = Token::CIPHER.new(Sodium::SecureBuffer.new(key.to_slice))\nnonce = Sodium::Nonce.random\nheader = IO::Memory.new(Token::HEADER_SIZE)\nheader.write_byte(payload.size > compress_threshold ? 129_u8 : 128_u8)\nheader.write_bytes(timestamp.to_unix.to_u32, IO::ByteFormat::BigEndian)\nheader.write(nonce.to_slice)\nif payload.size > compress_threshold\n  cctx = Zstd::Compress::Context.new(level: compress_level)\n  payload = cctx.compress(payload.to_slice)\nend\nciphertext, _ = cipher.encrypt(payload, nonce: nonce, additional: header.to_slice)\nraw = Bytes.new(header.size + ciphertext.size)\nheader.to_slice.move_to(raw)\nciphertext.move_to(raw + header.size)\nBase64.urlsafe_encode(raw.to_slice)\n"}}],"constructors":[],"instance_methods":[],"macros":[],"types":[{"html_id":"suzuri/Suzuri/Error","path":"Suzuri/Error.html","kind":"module","full_name":"Suzuri::Error","name":"Error","abstract":false,"superclass":null,"ancestors":[],"locations":[],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"aliased":"","const":false,"constants":[],"included_modules":[],"extended_modules":[],"subclasses":[],"including_types":[],"namespace":{"html_id":"suzuri/Suzuri","kind":"module","full_name":"Suzuri","name":"Suzuri"},"doc":null,"summary":null,"class_methods":[],"constructors":[],"instance_methods":[],"macros":[],"types":[{"html_id":"suzuri/Suzuri/Error/DecodeError","path":"Suzuri/Error/DecodeError.html","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError","abstract":false,"superclass":{"html_id":"suzuri/Exception","kind":"class","full_name":"Exception","name":"Exception"},"ancestors":[{"html_id":"suzuri/Exception","kind":"class","full_name":"Exception","name":"Exception"},{"html_id":"suzuri/Reference","kind":"class","full_name":"Reference","name":"Reference"},{"html_id":"suzuri/Object","kind":"class","full_name":"Object","name":"Object"}],"locations":[],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"aliased":"","const":false,"constants":[],"included_modules":[],"extended_modules":[],"subclasses":[{"html_id":"suzuri/Suzuri/Error/DecryptionFailed","kind":"class","full_name":"Suzuri::Error::DecryptionFailed","name":"DecryptionFailed"},{"html_id":"suzuri/Suzuri/Error/MalformedInput","kind":"class","full_name":"Suzuri::Error::MalformedInput","name":"MalformedInput"},{"html_id":"suzuri/Suzuri/Error/TokenExpired","kind":"class","full_name":"Suzuri::Error::TokenExpired","name":"TokenExpired"}],"including_types":[],"namespace":{"html_id":"suzuri/Suzuri/Error","kind":"module","full_name":"Suzuri::Error","name":"Error"},"doc":null,"summary":null,"class_methods":[],"constructors":[],"instance_methods":[],"macros":[],"types":[]},{"html_id":"suzuri/Suzuri/Error/DecryptionFailed","path":"Suzuri/Error/DecryptionFailed.html","kind":"class","full_name":"Suzuri::Error::DecryptionFailed","name":"DecryptionFailed","abstract":false,"superclass":{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},"ancestors":[{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},{"html_id":"suzuri/Exception","kind":"class","full_name":"Exception","name":"Exception"},{"html_id":"suzuri/Reference","kind":"class","full_name":"Reference","name":"Reference"},{"html_id":"suzuri/Object","kind":"class","full_name":"Object","name":"Object"}],"locations":[],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"aliased":"","const":false,"constants":[],"included_modules":[],"extended_modules":[],"subclasses":[],"including_types":[],"namespace":{"html_id":"suzuri/Suzuri/Error","kind":"module","full_name":"Suzuri::Error","name":"Error"},"doc":null,"summary":null,"class_methods":[],"constructors":[],"instance_methods":[],"macros":[],"types":[]},{"html_id":"suzuri/Suzuri/Error/MalformedInput","path":"Suzuri/Error/MalformedInput.html","kind":"class","full_name":"Suzuri::Error::MalformedInput","name":"MalformedInput","abstract":false,"superclass":{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},"ancestors":[{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},{"html_id":"suzuri/Exception","kind":"class","full_name":"Exception","name":"Exception"},{"html_id":"suzuri/Reference","kind":"class","full_name":"Reference","name":"Reference"},{"html_id":"suzuri/Object","kind":"class","full_name":"Object","name":"Object"}],"locations":[],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"aliased":"","const":false,"constants":[],"included_modules":[],"extended_modules":[],"subclasses":[],"including_types":[],"namespace":{"html_id":"suzuri/Suzuri/Error","kind":"module","full_name":"Suzuri::Error","name":"Error"},"doc":null,"summary":null,"class_methods":[],"constructors":[],"instance_methods":[],"macros":[],"types":[]},{"html_id":"suzuri/Suzuri/Error/TokenExpired","path":"Suzuri/Error/TokenExpired.html","kind":"class","full_name":"Suzuri::Error::TokenExpired","name":"TokenExpired","abstract":false,"superclass":{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},"ancestors":[{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},{"html_id":"suzuri/Exception","kind":"class","full_name":"Exception","name":"Exception"},{"html_id":"suzuri/Reference","kind":"class","full_name":"Reference","name":"Reference"},{"html_id":"suzuri/Object","kind":"class","full_name":"Object","name":"Object"}],"locations":[],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"aliased":"","const":false,"constants":[],"included_modules":[],"extended_modules":[],"subclasses":[],"including_types":[],"namespace":{"html_id":"suzuri/Suzuri/Error","kind":"module","full_name":"Suzuri::Error","name":"Error"},"doc":null,"summary":null,"class_methods":[],"constructors":[],"instance_methods":[],"macros":[],"types":[]}]},{"html_id":"suzuri/Suzuri/Token","path":"Suzuri/Token.html","kind":"struct","full_name":"Suzuri::Token","name":"Token","abstract":false,"superclass":{"html_id":"suzuri/Struct","kind":"struct","full_name":"Struct","name":"Struct"},"ancestors":[{"html_id":"suzuri/Struct","kind":"struct","full_name":"Struct","name":"Struct"},{"html_id":"suzuri/Value","kind":"struct","full_name":"Value","name":"Value"},{"html_id":"suzuri/Object","kind":"class","full_name":"Object","name":"Object"}],"locations":[],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"aliased":"","const":false,"constants":[],"included_modules":[],"extended_modules":[],"subclasses":[],"including_types":[],"namespace":{"html_id":"suzuri/Suzuri","kind":"module","full_name":"Suzuri","name":"Suzuri"},"doc":null,"summary":null,"class_methods":[],"constructors":[],"instance_methods":[{"id":"payload:Bytes-instance-method","html_id":"payload:Bytes-instance-method","name":"payload","doc":"Returns the decrypted payload as `Bytes`","summary":"<p>Returns the decrypted payload as <code>Bytes</code></p>","abstract":false,"args":[],"args_string":" : Bytes","source_link":null,"def":{"name":"payload","args":[],"double_splat":null,"splat_index":null,"yields":null,"block_arg":null,"return_type":"Bytes","visibility":"Public","body":"@payload"}},{"id":"timestamp:Time-instance-method","html_id":"timestamp:Time-instance-method","name":"timestamp","doc":"Returns the creation timestamp","summary":"<p>Returns the creation timestamp</p>","abstract":false,"args":[],"args_string":" : Time","source_link":null,"def":{"name":"timestamp","args":[],"double_splat":null,"splat_index":null,"yields":null,"block_arg":null,"return_type":"Time","visibility":"Public","body":"@timestamp"}},{"id":"to_s:String-instance-method","html_id":"to_s:String-instance-method","name":"to_s","doc":"Returns the decrypted payload as `String`","summary":"<p>Returns the decrypted payload as <code>String</code></p>","abstract":false,"args":[],"args_string":" : String","source_link":null,"def":{"name":"to_s","args":[],"double_splat":null,"splat_index":null,"yields":null,"block_arg":null,"return_type":"String","visibility":"Public","body":"String.new(@payload)"}}],"macros":[],"types":[]}]}]}}
\ No newline at end of file
+{"repository_name":"suzuri","body":"# Suzuri\n[![Build](https://github.com/busyloop/suzuri/workflows/Build/badge.svg)](https://github.com/busyloop/suzuri/actions?query=workflow%3ABuild+branch%3Amaster) [![GitHub](https://img.shields.io/github/license/busyloop/suzuri)](https://en.wikipedia.org/wiki/MIT_License) [![GitHub release](https://img.shields.io/github/release/busyloop/suzuri.svg)](https://github.com/busyloop/suzuri/releases)\n\nSuzuri is a secure and easy to use token format that employs  \n[XChaCha20-Poly1305 AEAD](https://doc.libsodium.org/secret-key_cryptography/aead/chacha20-poly1305/xchacha20-poly1305_construction) symmetric encryption to create  \nauthenticated, encrypted, tamperproof tokens.  \n\nIt compresses and encrypts an arbitrary sequence of bytes,  \nthen encodes the result to url-safe Base64.\n\nSuzuri tokens can be used as a secure alternative to JWT  \nor for any type of general purpose message passing.\n\n\n## Installation\n\n1. Add the dependency to your `shard.yml`:\n\n   ```yaml\n   dependencies:\n     suzuri:\n       github: busyloop/suzuri\n   ```\n\n2. Run `shards install`\n\n## Documentation\n\n* [API Documentation](https://busyloop.github.io/suzuri/Suzuri.html)\n\n\n## Usage\n\n```crystal\nrequire \"suzuri\"\n\nTEST_KEY = \"TheKeyLengthMustBeThirtyTwoBytes\"\n\n## Encode\ntoken_str = Suzuri.encode(\"hello world\", TEST_KEY) # => \"(url-safe base64)\"\n\n## Decode\ntoken = Suzuri.decode(token_str, TEST_KEY)   # => Suzuri::Token\ntoken.to_s                                   # => \"hello world\"\ntoken.timestamp                              # => 2020-01-01 01:23:45.0 UTC\n\n## Decode with a TTL constraint\ntoken_str = Suzuri.encode(\"hello world\", TEST_KEY) # => \"(url-safe base64)\"\nsleep 5\nSuzuri.decode(token_str, TEST_KEY, 2.seconds) # => Suzuri::Error::TokenExpired\n```\n\n## Usage (with [JSON::Serializable](https://crystal-lang.org/api/0.34.0/JSON/Serializable.html))\n\n```crystal\nrequire \"suzuri/json_serializable\"\n\nTEST_KEY = \"TheKeyLengthMustBeThirtyTwoBytes\"\n\nclass Person\n   include JSON::Serializable\n\n   @[JSON::Field]\n   property name : String\n\n   def initialize(@name)\n   end\nend\n\nbob = Person.new(name: \"bob\")\ntoken_str = bob.to_suzuri(TEST_KEY)\n\nbob2 = Person.from_suzuri(token_str, TEST_KEY)\nbob2.name # => \"bob\"\n```\n\n\n## Compression\n\nBy default Suzuri applies zstd compression before encryption when the  \npayload is larger than 512 bytes. The compression threshold and level  \ncan be chosen at runtime.\n\n\n## Contributing\n\n1. Fork it (<https://github.com/busyloop/suzuri/fork>)\n2. Create your feature branch (`git checkout -b my-new-feature`)\n3. Commit your changes (`git commit -am 'Add some feature'`)\n4. Push to the branch (`git push origin my-new-feature`)\n5. Create a new Pull Request\n\n## Credits\n\nSuzuri is inspired by (but not compatible to) [Branca](https://github.com/tuupola/branca-spec/)-tokens. The underlying encryption is identical.  \nSuzuri adds compression support and serializes to url-safe Base64 instead of Base62.\n\n","program":{"html_id":"suzuri/toplevel","path":"toplevel.html","kind":"module","full_name":"Top Level Namespace","name":"Top Level Namespace","abstract":false,"locations":[],"repository_name":"suzuri","program":true,"enum":false,"alias":false,"const":false,"types":[{"html_id":"suzuri/JSON","path":"JSON.html","kind":"module","full_name":"JSON","name":"JSON","abstract":false,"locations":[{"filename":"src/suzuri/json_serializable.cr","line_number":39,"url":null}],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"const":false,"types":[{"html_id":"suzuri/JSON/Serializable","path":"JSON/Serializable.html","kind":"module","full_name":"JSON::Serializable","name":"Serializable","abstract":false,"locations":[{"filename":"src/suzuri/json_serializable.cr","line_number":39,"url":null}],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"const":false,"namespace":{"html_id":"suzuri/JSON","kind":"module","full_name":"JSON","name":"JSON"},"doc":"Use `require \"suzuri/json_serializable\"` to add\n`#to_suzuri`, `#from_suzuri` and `#from_suzuri_with_timestamp`\nmethods to all `JSON::Serializable` objects.\n\n**Example usage:**\n\n```\nrequire \"suzuri/json_serializable\"\n\nclass Person\n  include JSON::Serializable\n\n  @[JSON::Field(key: \"name\")]\n  property name : String\n\n  def initialize(@name)\n  end\nend\n\nbob = Person.new(name: \"bob\")\ntoken = bob.to_suzuri(KEY)\n\ndecoded = Person.from_suzuri(token, KEY)\ndecoded.name # => \"bob\"\n\n# Decode with ttl constraint\ndecoded = Person.from_suzuri(token, KEY, 5.seconds)\n\n# Decode with timestamp\ndecoded, timestamp = Person.from_suzuri_with_timestamp(token, KEY)\ndecoded.name # => \"bob\"\ntimestamp    # => Time\n\n# Decode with timestamp and ttl constraint\ndecoded, timestamp = Person.from_suzuri_with_timestamp(token, KEY, 5.seconds)\n```","summary":"<p>Use <code>require &quot;suzuri/json_serializable&quot;</code> to add <code>#to_suzuri</code>, <code>#from_suzuri</code> and <code>#from_suzuri_with_timestamp</code> methods to all <code><a href=\"../JSON/Serializable.html\">JSON::Serializable</a></code> objects.</p>"}]},{"html_id":"suzuri/Suzuri","path":"Suzuri.html","kind":"module","full_name":"Suzuri","name":"Suzuri","abstract":false,"locations":[{"filename":"src/suzuri.cr","line_number":5,"url":null}],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"const":false,"class_methods":[{"html_id":"decode(token:String,key:String,ttl:Time::Span?=nil):Token-class-method","name":"decode","doc":"Decodes a Suzuri token.\n\n**Examples:**\n```\n# Decode\nSuzuri.decode(token, KEY) # => Suzuri::Token\n\n# Decode with a ttl constraint\nSuzuri.decode(token, KEY, 5.minutes) # => Suzuri::Error::TokenExpired\n```","summary":"<p>Decodes a Suzuri token.</p>","abstract":false,"args":[{"name":"token","external_name":"token","restriction":"String"},{"name":"key","external_name":"key","restriction":"String"},{"name":"ttl","default_value":"nil","external_name":"ttl","restriction":"Time::Span | ::Nil"}],"args_string":"(token : String, key : String, ttl : Time::Span? = nil) : Token","args_html":"(token : String, key : String, ttl : Time::Span? = <span class=\"n\">nil</span>) : <a href=\"Suzuri/Token.html\">Token</a>","location":{"filename":"src/suzuri.cr","line_number":59,"url":null},"def":{"name":"decode","args":[{"name":"token","external_name":"token","restriction":"String"},{"name":"key","external_name":"key","restriction":"String"},{"name":"ttl","default_value":"nil","external_name":"ttl","restriction":"Time::Span | ::Nil"}],"return_type":"Token","visibility":"Public","body":"begin\n  raw = Base64.decode(token)\nrescue ex : Exception\n  raise(Error::MalformedInput.new(\"Base64 decoding failed\"))\nend\nbegin\n  timestamp = Time.unix((IO::Memory.new(raw[1..4])).read_bytes(UInt32, IO::ByteFormat::BigEndian))\n  header = raw[0..(Token::HEADER_SIZE - 1)]\n  ciphertext = raw[Token::HEADER_SIZE..-1]\n  nonce = Sodium::Nonce.new(raw[5..(4 + Token::NONCE_SIZE)])\nrescue ex : Exception\n  raise(Error::MalformedInput.new(ex.message))\nend\nbegin\n  cipher = Token::CIPHER.new(Sodium::SecureBuffer.copy_from(key.to_slice))\n  payload = cipher.decrypt(ciphertext, nonce: nonce, additional: header.to_slice)\n  if raw[0] == 129_u8\n    dctx = Zstd::Decompress::Context.new\n    payload = dctx.decompress(payload)\n  end\nrescue ex : Sodium::Error::DecryptionFailed\n  raise(Error::DecryptionFailed.new(ex.message))\nend\nif ttl && (timestamp + ttl) < Time.utc\n  raise(Error::TokenExpired.new(\"Token expired at #{timestamp + ttl}\"))\nend\nToken.new(payload: payload, timestamp: timestamp)\n"}},{"html_id":"encode(payload:String|Bytes,key:String|Bytes,timestamp:Time=Time.utc,compress_level=3,compress_threshold:UInt64=512):String-class-method","name":"encode","doc":"Encodes a Suzuri token.\n\n**Examples:**\n```\n# Encode\nSuzuri.encode(\"hello world\", KEY) # => \"wB3AKYBaTwJc...\"\n\n# Encode with compression disabled\nSuzuri.encode(\"hello world\", KEY, compress_threshold: UInt64::MAX) # => \"xAJyiEKfPLPi...\"\n\n# Encode with a custom creation timestamp\nSuzuri.encode(\"hello world\", KEY, Time.utc(1985-10-26)) # => \"mArTYmcfLyYy...\"\n\n# Encode with a higher compression level. Value can be 1-19. Default is 3.\nSuzuri.encode(\"hello world\", KEY, compress_level: 10) # => \"puI8lSpoAox5...\"\n```","summary":"<p>Encodes a Suzuri token.</p>","abstract":false,"args":[{"name":"payload","external_name":"payload","restriction":"String | Bytes"},{"name":"key","external_name":"key","restriction":"String | Bytes"},{"name":"timestamp","default_value":"Time.utc","external_name":"timestamp","restriction":"Time"},{"name":"compress_level","default_value":"3","external_name":"compress_level","restriction":""},{"name":"compress_threshold","default_value":"512","external_name":"compress_threshold","restriction":"UInt64"}],"args_string":"(payload : String | Bytes, key : String | Bytes, timestamp : Time = Time.utc, compress_level = 3, compress_threshold : UInt64 = 512) : String","args_html":"(payload : String | Bytes, key : String | Bytes, timestamp : Time = <span class=\"t\">Time</span>.utc, compress_level = <span class=\"n\">3</span>, compress_threshold : UInt64 = <span class=\"n\">512</span>) : String","location":{"filename":"src/suzuri.cr","line_number":22,"url":null},"def":{"name":"encode","args":[{"name":"payload","external_name":"payload","restriction":"String | Bytes"},{"name":"key","external_name":"key","restriction":"String | Bytes"},{"name":"timestamp","default_value":"Time.utc","external_name":"timestamp","restriction":"Time"},{"name":"compress_level","default_value":"3","external_name":"compress_level","restriction":""},{"name":"compress_threshold","default_value":"512","external_name":"compress_threshold","restriction":"UInt64"}],"return_type":"String","visibility":"Public","body":"cipher = Token::CIPHER.new(Sodium::SecureBuffer.copy_from(key.to_slice))\nnonce = Sodium::Nonce.random\nheader = IO::Memory.new(Token::HEADER_SIZE)\nheader.write_byte(payload.size > compress_threshold ? 129_u8 : 128_u8)\nheader.write_bytes(timestamp.to_unix.to_u32, IO::ByteFormat::BigEndian)\nheader.write(nonce.to_slice)\nif payload.size > compress_threshold\n  cctx = Zstd::Compress::Context.new(level: compress_level)\n  payload = cctx.compress(payload.to_slice)\nend\nciphertext, _ = cipher.encrypt(payload, nonce: nonce, additional: header.to_slice)\nraw = Bytes.new(header.size + ciphertext.size)\nheader.to_slice.move_to(raw)\nciphertext.move_to(raw + header.size)\nBase64.urlsafe_encode(raw.to_slice)\n"}}],"types":[{"html_id":"suzuri/Suzuri/Error","path":"Suzuri/Error.html","kind":"module","full_name":"Suzuri::Error","name":"Error","abstract":false,"locations":[{"filename":"src/suzuri.cr","line_number":90,"url":null}],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"const":false,"namespace":{"html_id":"suzuri/Suzuri","kind":"module","full_name":"Suzuri","name":"Suzuri"},"types":[{"html_id":"suzuri/Suzuri/Error/DecodeError","path":"Suzuri/Error/DecodeError.html","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError","abstract":false,"superclass":{"html_id":"suzuri/Exception","kind":"class","full_name":"Exception","name":"Exception"},"ancestors":[{"html_id":"suzuri/Exception","kind":"class","full_name":"Exception","name":"Exception"},{"html_id":"suzuri/Reference","kind":"class","full_name":"Reference","name":"Reference"},{"html_id":"suzuri/Object","kind":"class","full_name":"Object","name":"Object"}],"locations":[{"filename":"src/suzuri.cr","line_number":91,"url":null}],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"const":false,"subclasses":[{"html_id":"suzuri/Suzuri/Error/DecryptionFailed","kind":"class","full_name":"Suzuri::Error::DecryptionFailed","name":"DecryptionFailed"},{"html_id":"suzuri/Suzuri/Error/MalformedInput","kind":"class","full_name":"Suzuri::Error::MalformedInput","name":"MalformedInput"},{"html_id":"suzuri/Suzuri/Error/TokenExpired","kind":"class","full_name":"Suzuri::Error::TokenExpired","name":"TokenExpired"}],"namespace":{"html_id":"suzuri/Suzuri/Error","kind":"module","full_name":"Suzuri::Error","name":"Error"}},{"html_id":"suzuri/Suzuri/Error/DecryptionFailed","path":"Suzuri/Error/DecryptionFailed.html","kind":"class","full_name":"Suzuri::Error::DecryptionFailed","name":"DecryptionFailed","abstract":false,"superclass":{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},"ancestors":[{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},{"html_id":"suzuri/Exception","kind":"class","full_name":"Exception","name":"Exception"},{"html_id":"suzuri/Reference","kind":"class","full_name":"Reference","name":"Reference"},{"html_id":"suzuri/Object","kind":"class","full_name":"Object","name":"Object"}],"locations":[{"filename":"src/suzuri.cr","line_number":94,"url":null}],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"const":false,"namespace":{"html_id":"suzuri/Suzuri/Error","kind":"module","full_name":"Suzuri::Error","name":"Error"}},{"html_id":"suzuri/Suzuri/Error/MalformedInput","path":"Suzuri/Error/MalformedInput.html","kind":"class","full_name":"Suzuri::Error::MalformedInput","name":"MalformedInput","abstract":false,"superclass":{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},"ancestors":[{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},{"html_id":"suzuri/Exception","kind":"class","full_name":"Exception","name":"Exception"},{"html_id":"suzuri/Reference","kind":"class","full_name":"Reference","name":"Reference"},{"html_id":"suzuri/Object","kind":"class","full_name":"Object","name":"Object"}],"locations":[{"filename":"src/suzuri.cr","line_number":92,"url":null}],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"const":false,"namespace":{"html_id":"suzuri/Suzuri/Error","kind":"module","full_name":"Suzuri::Error","name":"Error"}},{"html_id":"suzuri/Suzuri/Error/TokenExpired","path":"Suzuri/Error/TokenExpired.html","kind":"class","full_name":"Suzuri::Error::TokenExpired","name":"TokenExpired","abstract":false,"superclass":{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},"ancestors":[{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},{"html_id":"suzuri/Exception","kind":"class","full_name":"Exception","name":"Exception"},{"html_id":"suzuri/Reference","kind":"class","full_name":"Reference","name":"Reference"},{"html_id":"suzuri/Object","kind":"class","full_name":"Object","name":"Object"}],"locations":[{"filename":"src/suzuri.cr","line_number":93,"url":null}],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"const":false,"namespace":{"html_id":"suzuri/Suzuri/Error","kind":"module","full_name":"Suzuri::Error","name":"Error"}}]},{"html_id":"suzuri/Suzuri/Token","path":"Suzuri/Token.html","kind":"struct","full_name":"Suzuri::Token","name":"Token","abstract":false,"superclass":{"html_id":"suzuri/Struct","kind":"struct","full_name":"Struct","name":"Struct"},"ancestors":[{"html_id":"suzuri/Struct","kind":"struct","full_name":"Struct","name":"Struct"},{"html_id":"suzuri/Value","kind":"struct","full_name":"Value","name":"Value"},{"html_id":"suzuri/Object","kind":"class","full_name":"Object","name":"Object"}],"locations":[{"filename":"src/suzuri.cr","line_number":97,"url":null}],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"const":false,"namespace":{"html_id":"suzuri/Suzuri","kind":"module","full_name":"Suzuri","name":"Suzuri"},"instance_methods":[{"html_id":"payload:Bytes-instance-method","name":"payload","doc":"Returns the decrypted payload as `Bytes`","summary":"<p>Returns the decrypted payload as <code>Bytes</code></p>","abstract":false,"location":{"filename":"src/suzuri.cr","line_number":109,"url":null},"def":{"name":"payload","return_type":"Bytes","visibility":"Public","body":"@payload"}},{"html_id":"timestamp:Time-instance-method","name":"timestamp","doc":"Returns the creation timestamp","summary":"<p>Returns the creation timestamp</p>","abstract":false,"location":{"filename":"src/suzuri.cr","line_number":106,"url":null},"def":{"name":"timestamp","return_type":"Time","visibility":"Public","body":"@timestamp"}},{"html_id":"to_s:String-instance-method","name":"to_s","doc":"Returns the decrypted payload as `String`","summary":"<p>Returns the decrypted payload as <code>String</code></p>","abstract":false,"location":{"filename":"src/suzuri.cr","line_number":112,"url":null},"def":{"name":"to_s","return_type":"String","visibility":"Public","body":"String.new(@payload)"}}]}]}]}}
\ No newline at end of file
diff --git a/docs/js/doc.js b/docs/js/doc.js
index cdf43da..703ad28 100644
--- a/docs/js/doc.js
+++ b/docs/js/doc.js
@@ -33,7 +33,7 @@ CrystalDocs.runQuery = function(query) {
     }
     if (matches.length > 0) {
       results.push({
-        id: type.id,
+        id: type.html_id,
         result_type: "type",
         kind: type.kind,
         name: name,
@@ -45,25 +45,36 @@ CrystalDocs.runQuery = function(query) {
       });
     }
 
-    type.instance_methods.forEach(function(method) {
-      searchMethod(method, type, "instance_method", query, results);
-    })
-    type.class_methods.forEach(function(method) {
-      searchMethod(method, type, "class_method", query, results);
-    })
-    type.constructors.forEach(function(constructor) {
-      searchMethod(constructor, type, "constructor", query, results);
-    })
-    type.macros.forEach(function(macro) {
-      searchMethod(macro, type, "macro", query, results);
-    })
-    type.constants.forEach(function(constant){
-      searchConstant(constant, type, query, results);
-    });
-
-    type.types.forEach(function(subtype){
-      searchType(subtype, query, results);
-    });
+    if (type.instance_methods) {
+      type.instance_methods.forEach(function(method) {
+        searchMethod(method, type, "instance_method", query, results);
+      })
+    }
+    if (type.class_methods) {
+      type.class_methods.forEach(function(method) {
+        searchMethod(method, type, "class_method", query, results);
+      })
+    }
+    if (type.constructors) {
+      type.constructors.forEach(function(constructor) {
+        searchMethod(constructor, type, "constructor", query, results);
+      })
+    }
+    if (type.macros) {
+      type.macros.forEach(function(macro) {
+        searchMethod(macro, type, "macro", query, results);
+      })
+    }
+    if (type.constants) {
+      type.constants.forEach(function(constant){
+        searchConstant(constant, type, query, results);
+      });
+    }
+    if (type.types) {
+      type.types.forEach(function(subtype){
+        searchType(subtype, query, results);
+      });
+    }
   };
 
   function searchMethod(method, type, kind, query, results) {
@@ -75,13 +86,15 @@ CrystalDocs.runQuery = function(query) {
       matchedFields.push("name");
     }
 
-    method.args.forEach(function(arg){
-      var argMatches = query.matches(arg.external_name);
-      if (argMatches) {
-        matches = matches.concat(argMatches);
-        matchedFields.push("args");
-      }
-    });
+    if (method.args) {
+      method.args.forEach(function(arg){
+        var argMatches = query.matches(arg.external_name);
+        if (argMatches) {
+          matches = matches.concat(argMatches);
+          matchedFields.push("args");
+        }
+      });
+    }
 
     var docMatches = query.matches(type.doc);
     if(docMatches){
@@ -96,14 +109,14 @@ CrystalDocs.runQuery = function(query) {
         matches = matches.concat(typeMatches);
       }
       results.push({
-        id: method.id,
+        id: method.html_id,
         type: type.full_name,
         result_type: kind,
         name: method.name,
         full_name: type.full_name + "#" + method.name,
         args_string: method.args_string,
         summary: method.summary,
-        href: type.path + "#" + method.id,
+        href: type.path + "#" + method.html_id,
         matched_fields: matchedFields,
         matched_terms: matches
       });
@@ -130,14 +143,14 @@ CrystalDocs.runQuery = function(query) {
         matches = matches.concat(typeMatches);
       }
       results.push({
-        id: constant.id,
+        id: constant.html_id,
         type: type.full_name,
         result_type: "constant",
         name: constant.name,
         full_name: type.full_name + "#" + constant.name,
         value: constant.value,
         summary: constant.summary,
-        href: type.path + "#" + constant.id,
+        href: type.path + "#" + constant.html_id,
         matched_fields: matchedFields,
         matched_terms: matches
       });
@@ -908,7 +921,7 @@ document.addEventListener('DOMContentLoaded', function() {
     };
   }
 
-  var repositoryName = document.querySelector('#repository-name').getAttribute('content');
+  var repositoryName = document.querySelector('[name=repository-name]').getAttribute('content');
   var typesList = document.querySelector('.types-list');
   var searchInput = document.querySelector('.search-input');
   var parents = document.querySelectorAll('.types-list li.parent');
diff --git a/docs/search-index.js b/docs/search-index.js
index 89b8200..a07c639 100644
--- a/docs/search-index.js
+++ b/docs/search-index.js
@@ -1 +1 @@
-crystal_doc_search_index_callback({"repository_name":"suzuri","body":"# Suzuri\n[![Build](https://github.com/busyloop/suzuri/workflows/Build/badge.svg)](https://github.com/busyloop/suzuri/actions?query=workflow%3ABuild+branch%3Amaster) [![GitHub](https://img.shields.io/github/license/busyloop/suzuri)](https://en.wikipedia.org/wiki/MIT_License) [![GitHub release](https://img.shields.io/github/release/busyloop/suzuri.svg)](https://github.com/busyloop/suzuri/releases)\n\nSuzuri is a secure and easy to use token format that employs  \n[XChaCha20-Poly1305 AEAD](https://doc.libsodium.org/secret-key_cryptography/aead/chacha20-poly1305/xchacha20-poly1305_construction) symmetric encryption to create  \nauthenticated, encrypted, tamperproof tokens.  \n\nIt compresses and encrypts an arbitrary sequence of bytes,  \nthen encodes the result to url-safe Base64.\n\nSuzuri tokens can be used as a secure alternative to JWT  \nor for any type of general purpose message passing.\n\n\n## Installation\n\n1. Add the dependency to your `shard.yml`:\n\n   ```yaml\n   dependencies:\n     suzuri:\n       github: busyloop/suzuri\n   ```\n\n2. Run `shards install`\n\n## Documentation\n\n* [API Documentation](https://busyloop.github.io/suzuri/Suzuri.html)\n\n\n## Usage\n\n```crystal\nrequire \"suzuri\"\n\nTEST_KEY = \"TheKeyLengthMustBeThirtyTwoBytes\"\n\n## Encode\ntoken_str = Suzuri.encode(\"hello world\", TEST_KEY) # => \"(url-safe base64)\"\n\n## Decode\ntoken = Suzuri.decode(token_str, TEST_KEY)   # => Suzuri::Token\ntoken.to_s                                   # => \"hello world\"\ntoken.timestamp                              # => 2020-01-01 01:23:45.0 UTC\n\n## Decode with a TTL constraint\ntoken_str = Suzuri.encode(\"hello world\", TEST_KEY) # => \"(url-safe base64)\"\nsleep 5\nSuzuri.decode(token_str, TEST_KEY, 2.seconds) # => Suzuri::Error::TokenExpired\n```\n\n## Usage (with [JSON::Serializable](https://crystal-lang.org/api/0.34.0/JSON/Serializable.html))\n\n```crystal\nrequire \"suzuri/json_serializable\"\n\nTEST_KEY = \"TheKeyLengthMustBeThirtyTwoBytes\"\n\nclass Person\n   include JSON::Serializable\n\n   @[JSON::Field]\n   property name : String\n\n   def initialize(@name)\n   end\nend\n\nbob = Person.new(name: \"bob\")\ntoken_str = bob.to_suzuri(TEST_KEY)\n\nbob2 = Person.from_suzuri(token_str, TEST_KEY)\nbob2.name # => \"bob\"\n```\n\n\n## Compression\n\nBy default Suzuri applies zstd compression before encryption when the  \npayload is larger than 512 bytes. The compression threshold and level  \ncan be chosen at runtime.\n\n\n## Contributing\n\n1. Fork it (<https://github.com/busyloop/suzuri/fork>)\n2. Create your feature branch (`git checkout -b my-new-feature`)\n3. Commit your changes (`git commit -am 'Add some feature'`)\n4. Push to the branch (`git push origin my-new-feature`)\n5. Create a new Pull Request\n\n## Credits\n\nSuzuri is inspired by (but not compatible to) [Branca](https://github.com/tuupola/branca-spec/)-tokens. The underlying encryption is identical.  \nSuzuri adds compression support and serializes to url-safe Base64 instead of Base62.\n\n","program":{"html_id":"suzuri/toplevel","path":"toplevel.html","kind":"module","full_name":"Top Level Namespace","name":"Top Level Namespace","abstract":false,"superclass":null,"ancestors":[],"locations":[],"repository_name":"suzuri","program":true,"enum":false,"alias":false,"aliased":"","const":false,"constants":[],"included_modules":[],"extended_modules":[],"subclasses":[],"including_types":[],"namespace":null,"doc":null,"summary":null,"class_methods":[],"constructors":[],"instance_methods":[],"macros":[],"types":[{"html_id":"suzuri/JSON","path":"JSON.html","kind":"module","full_name":"JSON","name":"JSON","abstract":false,"superclass":null,"ancestors":[],"locations":[],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"aliased":"","const":false,"constants":[],"included_modules":[],"extended_modules":[],"subclasses":[],"including_types":[],"namespace":null,"doc":null,"summary":null,"class_methods":[],"constructors":[],"instance_methods":[],"macros":[],"types":[{"html_id":"suzuri/JSON/Serializable","path":"JSON/Serializable.html","kind":"module","full_name":"JSON::Serializable","name":"Serializable","abstract":false,"superclass":null,"ancestors":[],"locations":[],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"aliased":"","const":false,"constants":[],"included_modules":[],"extended_modules":[],"subclasses":[],"including_types":[],"namespace":{"html_id":"suzuri/JSON","kind":"module","full_name":"JSON","name":"JSON"},"doc":"Use `require \"suzuri/json_serializable\"` to add\n`#to_suzuri`, `#from_suzuri` and `#from_suzuri_with_timestamp`\nmethods to all `JSON::Serializable` objects.\n\n**Example usage:**\n\n```\nrequire \"suzuri/json_serializable\"\n\nclass Person\n  include JSON::Serializable\n\n  @[JSON::Field(key: \"name\")]\n  property name : String\n\n  def initialize(@name)\n  end\nend\n\nbob = Person.new(name: \"bob\")\ntoken = bob.to_suzuri(KEY)\n\ndecoded = Person.from_suzuri(token, KEY)\ndecoded.name # => \"bob\"\n\n# Decode with ttl constraint\ndecoded = Person.from_suzuri(token, KEY, 5.seconds)\n\n# Decode with timestamp\ndecoded, timestamp = Person.from_suzuri_with_timestamp(token, KEY)\ndecoded.name # => \"bob\"\ntimestamp    # => Time\n\n# Decode with timestamp and ttl constraint\ndecoded, timestamp = Person.from_suzuri_with_timestamp(token, KEY, 5.seconds)\n```","summary":"<p>Use <code>require \"suzuri/json_serializable\"</code> to add <code>#to_suzuri</code>, <code>#from_suzuri</code> and <code>#from_suzuri_with_timestamp</code> methods to all <code><a href=\"../JSON/Serializable.html\">JSON::Serializable</a></code> objects.</p>","class_methods":[],"constructors":[],"instance_methods":[],"macros":[],"types":[]}]},{"html_id":"suzuri/Suzuri","path":"Suzuri.html","kind":"module","full_name":"Suzuri","name":"Suzuri","abstract":false,"superclass":null,"ancestors":[],"locations":[],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"aliased":"","const":false,"constants":[{"id":"VERSION","name":"VERSION","value":"\"1.0.2\"","doc":null,"summary":null}],"included_modules":[],"extended_modules":[],"subclasses":[],"including_types":[],"namespace":null,"doc":null,"summary":null,"class_methods":[{"id":"decode(token:String,key:String,ttl:Time::Span?=nil):Token-class-method","html_id":"decode(token:String,key:String,ttl:Time::Span?=nil):Token-class-method","name":"decode","doc":"Decodes a Suzuri token.\n\n**Examples:**\n```\n# Decode\nSuzuri.decode(token, KEY) # => Suzuri::Token\n\n# Decode with a ttl constraint\nSuzuri.decode(token, KEY, 5.minutes) # => Suzuri::Error::TokenExpired\n```","summary":"<p>Decodes a Suzuri token.</p>","abstract":false,"args":[{"name":"token","doc":null,"default_value":"","external_name":"token","restriction":"String"},{"name":"key","doc":null,"default_value":"","external_name":"key","restriction":"String"},{"name":"ttl","doc":null,"default_value":"nil","external_name":"ttl","restriction":"Time::Span | ::Nil"}],"args_string":"(token : String, key : String, ttl : Time::Span? = <span class=\"n\">nil</span>) : Token","source_link":null,"def":{"name":"decode","args":[{"name":"token","doc":null,"default_value":"","external_name":"token","restriction":"String"},{"name":"key","doc":null,"default_value":"","external_name":"key","restriction":"String"},{"name":"ttl","doc":null,"default_value":"nil","external_name":"ttl","restriction":"Time::Span | ::Nil"}],"double_splat":null,"splat_index":null,"yields":null,"block_arg":null,"return_type":"Token","visibility":"Public","body":"begin\n  raw = Base64.decode(token)\nrescue ex : Exception\n  raise(Error::MalformedInput.new(\"Base64 decoding failed\"))\nend\nbegin\n  timestamp = Time.unix((IO::Memory.new(raw[1..4])).read_bytes(UInt32, IO::ByteFormat::BigEndian))\n  header = raw[0..(Token::HEADER_SIZE - 1)]\n  ciphertext = raw[Token::HEADER_SIZE..-1]\n  nonce = Sodium::Nonce.new(raw[5..(4 + Token::NONCE_SIZE)])\nrescue ex : Exception\n  raise(Error::MalformedInput.new(ex.message))\nend\nbegin\n  cipher = Token::CIPHER.new(Sodium::SecureBuffer.new(key.to_slice))\n  payload = cipher.decrypt(ciphertext, nonce: nonce, additional: header.to_slice)\n  if raw[0] == 129_u8\n    dctx = Zstd::Decompress::Context.new\n    payload = dctx.decompress(payload)\n  end\nrescue ex : Sodium::Error::DecryptionFailed\n  raise(Error::DecryptionFailed.new(ex.message))\nend\nif ttl && (timestamp + ttl) < Time.utc\n  raise(Error::TokenExpired.new(\"Token expired at #{timestamp + ttl}\"))\nend\nToken.new(payload: payload, timestamp: timestamp)\n"}},{"id":"encode(payload:String|Bytes,key:String|Bytes,timestamp:Time=Time.utc,compress_level=3,compress_threshold:UInt64=512):String-class-method","html_id":"encode(payload:String|Bytes,key:String|Bytes,timestamp:Time=Time.utc,compress_level=3,compress_threshold:UInt64=512):String-class-method","name":"encode","doc":"Encodes a Suzuri token.\n\n**Examples:**\n```\n# Encode\nSuzuri.encode(\"hello world\", KEY) # => \"wB3AKYBaTwJc...\"\n\n# Encode with compression disabled\nSuzuri.encode(\"hello world\", KEY, compress_threshold: UInt64::MAX) # => \"xAJyiEKfPLPi...\"\n\n# Encode with a custom creation timestamp\nSuzuri.encode(\"hello world\", KEY, Time.utc(1985-10-26)) # => \"mArTYmcfLyYy...\"\n\n# Encode with a higher compression level. Value can be 1-19. Default is 3.\nSuzuri.encode(\"hello world\", KEY, compress_level: 10) # => \"puI8lSpoAox5...\"\n```","summary":"<p>Encodes a Suzuri token.</p>","abstract":false,"args":[{"name":"payload","doc":null,"default_value":"","external_name":"payload","restriction":"String | Bytes"},{"name":"key","doc":null,"default_value":"","external_name":"key","restriction":"String | Bytes"},{"name":"timestamp","doc":null,"default_value":"Time.utc","external_name":"timestamp","restriction":"Time"},{"name":"compress_level","doc":null,"default_value":"3","external_name":"compress_level","restriction":""},{"name":"compress_threshold","doc":null,"default_value":"512","external_name":"compress_threshold","restriction":"UInt64"}],"args_string":"(payload : String | Bytes, key : String | Bytes, timestamp : Time = <span class=\"t\">Time</span>.utc, compress_level = <span class=\"n\">3</span>, compress_threshold : UInt64 = <span class=\"n\">512</span>) : String","source_link":null,"def":{"name":"encode","args":[{"name":"payload","doc":null,"default_value":"","external_name":"payload","restriction":"String | Bytes"},{"name":"key","doc":null,"default_value":"","external_name":"key","restriction":"String | Bytes"},{"name":"timestamp","doc":null,"default_value":"Time.utc","external_name":"timestamp","restriction":"Time"},{"name":"compress_level","doc":null,"default_value":"3","external_name":"compress_level","restriction":""},{"name":"compress_threshold","doc":null,"default_value":"512","external_name":"compress_threshold","restriction":"UInt64"}],"double_splat":null,"splat_index":null,"yields":null,"block_arg":null,"return_type":"String","visibility":"Public","body":"cipher = Token::CIPHER.new(Sodium::SecureBuffer.new(key.to_slice))\nnonce = Sodium::Nonce.random\nheader = IO::Memory.new(Token::HEADER_SIZE)\nheader.write_byte(payload.size > compress_threshold ? 129_u8 : 128_u8)\nheader.write_bytes(timestamp.to_unix.to_u32, IO::ByteFormat::BigEndian)\nheader.write(nonce.to_slice)\nif payload.size > compress_threshold\n  cctx = Zstd::Compress::Context.new(level: compress_level)\n  payload = cctx.compress(payload.to_slice)\nend\nciphertext, _ = cipher.encrypt(payload, nonce: nonce, additional: header.to_slice)\nraw = Bytes.new(header.size + ciphertext.size)\nheader.to_slice.move_to(raw)\nciphertext.move_to(raw + header.size)\nBase64.urlsafe_encode(raw.to_slice)\n"}}],"constructors":[],"instance_methods":[],"macros":[],"types":[{"html_id":"suzuri/Suzuri/Error","path":"Suzuri/Error.html","kind":"module","full_name":"Suzuri::Error","name":"Error","abstract":false,"superclass":null,"ancestors":[],"locations":[],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"aliased":"","const":false,"constants":[],"included_modules":[],"extended_modules":[],"subclasses":[],"including_types":[],"namespace":{"html_id":"suzuri/Suzuri","kind":"module","full_name":"Suzuri","name":"Suzuri"},"doc":null,"summary":null,"class_methods":[],"constructors":[],"instance_methods":[],"macros":[],"types":[{"html_id":"suzuri/Suzuri/Error/DecodeError","path":"Suzuri/Error/DecodeError.html","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError","abstract":false,"superclass":{"html_id":"suzuri/Exception","kind":"class","full_name":"Exception","name":"Exception"},"ancestors":[{"html_id":"suzuri/Exception","kind":"class","full_name":"Exception","name":"Exception"},{"html_id":"suzuri/Reference","kind":"class","full_name":"Reference","name":"Reference"},{"html_id":"suzuri/Object","kind":"class","full_name":"Object","name":"Object"}],"locations":[],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"aliased":"","const":false,"constants":[],"included_modules":[],"extended_modules":[],"subclasses":[{"html_id":"suzuri/Suzuri/Error/DecryptionFailed","kind":"class","full_name":"Suzuri::Error::DecryptionFailed","name":"DecryptionFailed"},{"html_id":"suzuri/Suzuri/Error/MalformedInput","kind":"class","full_name":"Suzuri::Error::MalformedInput","name":"MalformedInput"},{"html_id":"suzuri/Suzuri/Error/TokenExpired","kind":"class","full_name":"Suzuri::Error::TokenExpired","name":"TokenExpired"}],"including_types":[],"namespace":{"html_id":"suzuri/Suzuri/Error","kind":"module","full_name":"Suzuri::Error","name":"Error"},"doc":null,"summary":null,"class_methods":[],"constructors":[],"instance_methods":[],"macros":[],"types":[]},{"html_id":"suzuri/Suzuri/Error/DecryptionFailed","path":"Suzuri/Error/DecryptionFailed.html","kind":"class","full_name":"Suzuri::Error::DecryptionFailed","name":"DecryptionFailed","abstract":false,"superclass":{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},"ancestors":[{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},{"html_id":"suzuri/Exception","kind":"class","full_name":"Exception","name":"Exception"},{"html_id":"suzuri/Reference","kind":"class","full_name":"Reference","name":"Reference"},{"html_id":"suzuri/Object","kind":"class","full_name":"Object","name":"Object"}],"locations":[],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"aliased":"","const":false,"constants":[],"included_modules":[],"extended_modules":[],"subclasses":[],"including_types":[],"namespace":{"html_id":"suzuri/Suzuri/Error","kind":"module","full_name":"Suzuri::Error","name":"Error"},"doc":null,"summary":null,"class_methods":[],"constructors":[],"instance_methods":[],"macros":[],"types":[]},{"html_id":"suzuri/Suzuri/Error/MalformedInput","path":"Suzuri/Error/MalformedInput.html","kind":"class","full_name":"Suzuri::Error::MalformedInput","name":"MalformedInput","abstract":false,"superclass":{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},"ancestors":[{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},{"html_id":"suzuri/Exception","kind":"class","full_name":"Exception","name":"Exception"},{"html_id":"suzuri/Reference","kind":"class","full_name":"Reference","name":"Reference"},{"html_id":"suzuri/Object","kind":"class","full_name":"Object","name":"Object"}],"locations":[],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"aliased":"","const":false,"constants":[],"included_modules":[],"extended_modules":[],"subclasses":[],"including_types":[],"namespace":{"html_id":"suzuri/Suzuri/Error","kind":"module","full_name":"Suzuri::Error","name":"Error"},"doc":null,"summary":null,"class_methods":[],"constructors":[],"instance_methods":[],"macros":[],"types":[]},{"html_id":"suzuri/Suzuri/Error/TokenExpired","path":"Suzuri/Error/TokenExpired.html","kind":"class","full_name":"Suzuri::Error::TokenExpired","name":"TokenExpired","abstract":false,"superclass":{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},"ancestors":[{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},{"html_id":"suzuri/Exception","kind":"class","full_name":"Exception","name":"Exception"},{"html_id":"suzuri/Reference","kind":"class","full_name":"Reference","name":"Reference"},{"html_id":"suzuri/Object","kind":"class","full_name":"Object","name":"Object"}],"locations":[],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"aliased":"","const":false,"constants":[],"included_modules":[],"extended_modules":[],"subclasses":[],"including_types":[],"namespace":{"html_id":"suzuri/Suzuri/Error","kind":"module","full_name":"Suzuri::Error","name":"Error"},"doc":null,"summary":null,"class_methods":[],"constructors":[],"instance_methods":[],"macros":[],"types":[]}]},{"html_id":"suzuri/Suzuri/Token","path":"Suzuri/Token.html","kind":"struct","full_name":"Suzuri::Token","name":"Token","abstract":false,"superclass":{"html_id":"suzuri/Struct","kind":"struct","full_name":"Struct","name":"Struct"},"ancestors":[{"html_id":"suzuri/Struct","kind":"struct","full_name":"Struct","name":"Struct"},{"html_id":"suzuri/Value","kind":"struct","full_name":"Value","name":"Value"},{"html_id":"suzuri/Object","kind":"class","full_name":"Object","name":"Object"}],"locations":[],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"aliased":"","const":false,"constants":[],"included_modules":[],"extended_modules":[],"subclasses":[],"including_types":[],"namespace":{"html_id":"suzuri/Suzuri","kind":"module","full_name":"Suzuri","name":"Suzuri"},"doc":null,"summary":null,"class_methods":[],"constructors":[],"instance_methods":[{"id":"payload:Bytes-instance-method","html_id":"payload:Bytes-instance-method","name":"payload","doc":"Returns the decrypted payload as `Bytes`","summary":"<p>Returns the decrypted payload as <code>Bytes</code></p>","abstract":false,"args":[],"args_string":" : Bytes","source_link":null,"def":{"name":"payload","args":[],"double_splat":null,"splat_index":null,"yields":null,"block_arg":null,"return_type":"Bytes","visibility":"Public","body":"@payload"}},{"id":"timestamp:Time-instance-method","html_id":"timestamp:Time-instance-method","name":"timestamp","doc":"Returns the creation timestamp","summary":"<p>Returns the creation timestamp</p>","abstract":false,"args":[],"args_string":" : Time","source_link":null,"def":{"name":"timestamp","args":[],"double_splat":null,"splat_index":null,"yields":null,"block_arg":null,"return_type":"Time","visibility":"Public","body":"@timestamp"}},{"id":"to_s:String-instance-method","html_id":"to_s:String-instance-method","name":"to_s","doc":"Returns the decrypted payload as `String`","summary":"<p>Returns the decrypted payload as <code>String</code></p>","abstract":false,"args":[],"args_string":" : String","source_link":null,"def":{"name":"to_s","args":[],"double_splat":null,"splat_index":null,"yields":null,"block_arg":null,"return_type":"String","visibility":"Public","body":"String.new(@payload)"}}],"macros":[],"types":[]}]}]}})
\ No newline at end of file
+crystal_doc_search_index_callback({"repository_name":"suzuri","body":"# Suzuri\n[![Build](https://github.com/busyloop/suzuri/workflows/Build/badge.svg)](https://github.com/busyloop/suzuri/actions?query=workflow%3ABuild+branch%3Amaster) [![GitHub](https://img.shields.io/github/license/busyloop/suzuri)](https://en.wikipedia.org/wiki/MIT_License) [![GitHub release](https://img.shields.io/github/release/busyloop/suzuri.svg)](https://github.com/busyloop/suzuri/releases)\n\nSuzuri is a secure and easy to use token format that employs  \n[XChaCha20-Poly1305 AEAD](https://doc.libsodium.org/secret-key_cryptography/aead/chacha20-poly1305/xchacha20-poly1305_construction) symmetric encryption to create  \nauthenticated, encrypted, tamperproof tokens.  \n\nIt compresses and encrypts an arbitrary sequence of bytes,  \nthen encodes the result to url-safe Base64.\n\nSuzuri tokens can be used as a secure alternative to JWT  \nor for any type of general purpose message passing.\n\n\n## Installation\n\n1. Add the dependency to your `shard.yml`:\n\n   ```yaml\n   dependencies:\n     suzuri:\n       github: busyloop/suzuri\n   ```\n\n2. Run `shards install`\n\n## Documentation\n\n* [API Documentation](https://busyloop.github.io/suzuri/Suzuri.html)\n\n\n## Usage\n\n```crystal\nrequire \"suzuri\"\n\nTEST_KEY = \"TheKeyLengthMustBeThirtyTwoBytes\"\n\n## Encode\ntoken_str = Suzuri.encode(\"hello world\", TEST_KEY) # => \"(url-safe base64)\"\n\n## Decode\ntoken = Suzuri.decode(token_str, TEST_KEY)   # => Suzuri::Token\ntoken.to_s                                   # => \"hello world\"\ntoken.timestamp                              # => 2020-01-01 01:23:45.0 UTC\n\n## Decode with a TTL constraint\ntoken_str = Suzuri.encode(\"hello world\", TEST_KEY) # => \"(url-safe base64)\"\nsleep 5\nSuzuri.decode(token_str, TEST_KEY, 2.seconds) # => Suzuri::Error::TokenExpired\n```\n\n## Usage (with [JSON::Serializable](https://crystal-lang.org/api/0.34.0/JSON/Serializable.html))\n\n```crystal\nrequire \"suzuri/json_serializable\"\n\nTEST_KEY = \"TheKeyLengthMustBeThirtyTwoBytes\"\n\nclass Person\n   include JSON::Serializable\n\n   @[JSON::Field]\n   property name : String\n\n   def initialize(@name)\n   end\nend\n\nbob = Person.new(name: \"bob\")\ntoken_str = bob.to_suzuri(TEST_KEY)\n\nbob2 = Person.from_suzuri(token_str, TEST_KEY)\nbob2.name # => \"bob\"\n```\n\n\n## Compression\n\nBy default Suzuri applies zstd compression before encryption when the  \npayload is larger than 512 bytes. The compression threshold and level  \ncan be chosen at runtime.\n\n\n## Contributing\n\n1. Fork it (<https://github.com/busyloop/suzuri/fork>)\n2. Create your feature branch (`git checkout -b my-new-feature`)\n3. Commit your changes (`git commit -am 'Add some feature'`)\n4. Push to the branch (`git push origin my-new-feature`)\n5. Create a new Pull Request\n\n## Credits\n\nSuzuri is inspired by (but not compatible to) [Branca](https://github.com/tuupola/branca-spec/)-tokens. The underlying encryption is identical.  \nSuzuri adds compression support and serializes to url-safe Base64 instead of Base62.\n\n","program":{"html_id":"suzuri/toplevel","path":"toplevel.html","kind":"module","full_name":"Top Level Namespace","name":"Top Level Namespace","abstract":false,"locations":[],"repository_name":"suzuri","program":true,"enum":false,"alias":false,"const":false,"types":[{"html_id":"suzuri/JSON","path":"JSON.html","kind":"module","full_name":"JSON","name":"JSON","abstract":false,"locations":[{"filename":"src/suzuri/json_serializable.cr","line_number":39,"url":null}],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"const":false,"types":[{"html_id":"suzuri/JSON/Serializable","path":"JSON/Serializable.html","kind":"module","full_name":"JSON::Serializable","name":"Serializable","abstract":false,"locations":[{"filename":"src/suzuri/json_serializable.cr","line_number":39,"url":null}],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"const":false,"namespace":{"html_id":"suzuri/JSON","kind":"module","full_name":"JSON","name":"JSON"},"doc":"Use `require \"suzuri/json_serializable\"` to add\n`#to_suzuri`, `#from_suzuri` and `#from_suzuri_with_timestamp`\nmethods to all `JSON::Serializable` objects.\n\n**Example usage:**\n\n```\nrequire \"suzuri/json_serializable\"\n\nclass Person\n  include JSON::Serializable\n\n  @[JSON::Field(key: \"name\")]\n  property name : String\n\n  def initialize(@name)\n  end\nend\n\nbob = Person.new(name: \"bob\")\ntoken = bob.to_suzuri(KEY)\n\ndecoded = Person.from_suzuri(token, KEY)\ndecoded.name # => \"bob\"\n\n# Decode with ttl constraint\ndecoded = Person.from_suzuri(token, KEY, 5.seconds)\n\n# Decode with timestamp\ndecoded, timestamp = Person.from_suzuri_with_timestamp(token, KEY)\ndecoded.name # => \"bob\"\ntimestamp    # => Time\n\n# Decode with timestamp and ttl constraint\ndecoded, timestamp = Person.from_suzuri_with_timestamp(token, KEY, 5.seconds)\n```","summary":"<p>Use <code>require &quot;suzuri/json_serializable&quot;</code> to add <code>#to_suzuri</code>, <code>#from_suzuri</code> and <code>#from_suzuri_with_timestamp</code> methods to all <code><a href=\"../JSON/Serializable.html\">JSON::Serializable</a></code> objects.</p>"}]},{"html_id":"suzuri/Suzuri","path":"Suzuri.html","kind":"module","full_name":"Suzuri","name":"Suzuri","abstract":false,"locations":[{"filename":"src/suzuri.cr","line_number":5,"url":null}],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"const":false,"class_methods":[{"html_id":"decode(token:String,key:String,ttl:Time::Span?=nil):Token-class-method","name":"decode","doc":"Decodes a Suzuri token.\n\n**Examples:**\n```\n# Decode\nSuzuri.decode(token, KEY) # => Suzuri::Token\n\n# Decode with a ttl constraint\nSuzuri.decode(token, KEY, 5.minutes) # => Suzuri::Error::TokenExpired\n```","summary":"<p>Decodes a Suzuri token.</p>","abstract":false,"args":[{"name":"token","external_name":"token","restriction":"String"},{"name":"key","external_name":"key","restriction":"String"},{"name":"ttl","default_value":"nil","external_name":"ttl","restriction":"Time::Span | ::Nil"}],"args_string":"(token : String, key : String, ttl : Time::Span? = nil) : Token","args_html":"(token : String, key : String, ttl : Time::Span? = <span class=\"n\">nil</span>) : <a href=\"Suzuri/Token.html\">Token</a>","location":{"filename":"src/suzuri.cr","line_number":59,"url":null},"def":{"name":"decode","args":[{"name":"token","external_name":"token","restriction":"String"},{"name":"key","external_name":"key","restriction":"String"},{"name":"ttl","default_value":"nil","external_name":"ttl","restriction":"Time::Span | ::Nil"}],"return_type":"Token","visibility":"Public","body":"begin\n  raw = Base64.decode(token)\nrescue ex : Exception\n  raise(Error::MalformedInput.new(\"Base64 decoding failed\"))\nend\nbegin\n  timestamp = Time.unix((IO::Memory.new(raw[1..4])).read_bytes(UInt32, IO::ByteFormat::BigEndian))\n  header = raw[0..(Token::HEADER_SIZE - 1)]\n  ciphertext = raw[Token::HEADER_SIZE..-1]\n  nonce = Sodium::Nonce.new(raw[5..(4 + Token::NONCE_SIZE)])\nrescue ex : Exception\n  raise(Error::MalformedInput.new(ex.message))\nend\nbegin\n  cipher = Token::CIPHER.new(Sodium::SecureBuffer.copy_from(key.to_slice))\n  payload = cipher.decrypt(ciphertext, nonce: nonce, additional: header.to_slice)\n  if raw[0] == 129_u8\n    dctx = Zstd::Decompress::Context.new\n    payload = dctx.decompress(payload)\n  end\nrescue ex : Sodium::Error::DecryptionFailed\n  raise(Error::DecryptionFailed.new(ex.message))\nend\nif ttl && (timestamp + ttl) < Time.utc\n  raise(Error::TokenExpired.new(\"Token expired at #{timestamp + ttl}\"))\nend\nToken.new(payload: payload, timestamp: timestamp)\n"}},{"html_id":"encode(payload:String|Bytes,key:String|Bytes,timestamp:Time=Time.utc,compress_level=3,compress_threshold:UInt64=512):String-class-method","name":"encode","doc":"Encodes a Suzuri token.\n\n**Examples:**\n```\n# Encode\nSuzuri.encode(\"hello world\", KEY) # => \"wB3AKYBaTwJc...\"\n\n# Encode with compression disabled\nSuzuri.encode(\"hello world\", KEY, compress_threshold: UInt64::MAX) # => \"xAJyiEKfPLPi...\"\n\n# Encode with a custom creation timestamp\nSuzuri.encode(\"hello world\", KEY, Time.utc(1985-10-26)) # => \"mArTYmcfLyYy...\"\n\n# Encode with a higher compression level. Value can be 1-19. Default is 3.\nSuzuri.encode(\"hello world\", KEY, compress_level: 10) # => \"puI8lSpoAox5...\"\n```","summary":"<p>Encodes a Suzuri token.</p>","abstract":false,"args":[{"name":"payload","external_name":"payload","restriction":"String | Bytes"},{"name":"key","external_name":"key","restriction":"String | Bytes"},{"name":"timestamp","default_value":"Time.utc","external_name":"timestamp","restriction":"Time"},{"name":"compress_level","default_value":"3","external_name":"compress_level","restriction":""},{"name":"compress_threshold","default_value":"512","external_name":"compress_threshold","restriction":"UInt64"}],"args_string":"(payload : String | Bytes, key : String | Bytes, timestamp : Time = Time.utc, compress_level = 3, compress_threshold : UInt64 = 512) : String","args_html":"(payload : String | Bytes, key : String | Bytes, timestamp : Time = <span class=\"t\">Time</span>.utc, compress_level = <span class=\"n\">3</span>, compress_threshold : UInt64 = <span class=\"n\">512</span>) : String","location":{"filename":"src/suzuri.cr","line_number":22,"url":null},"def":{"name":"encode","args":[{"name":"payload","external_name":"payload","restriction":"String | Bytes"},{"name":"key","external_name":"key","restriction":"String | Bytes"},{"name":"timestamp","default_value":"Time.utc","external_name":"timestamp","restriction":"Time"},{"name":"compress_level","default_value":"3","external_name":"compress_level","restriction":""},{"name":"compress_threshold","default_value":"512","external_name":"compress_threshold","restriction":"UInt64"}],"return_type":"String","visibility":"Public","body":"cipher = Token::CIPHER.new(Sodium::SecureBuffer.copy_from(key.to_slice))\nnonce = Sodium::Nonce.random\nheader = IO::Memory.new(Token::HEADER_SIZE)\nheader.write_byte(payload.size > compress_threshold ? 129_u8 : 128_u8)\nheader.write_bytes(timestamp.to_unix.to_u32, IO::ByteFormat::BigEndian)\nheader.write(nonce.to_slice)\nif payload.size > compress_threshold\n  cctx = Zstd::Compress::Context.new(level: compress_level)\n  payload = cctx.compress(payload.to_slice)\nend\nciphertext, _ = cipher.encrypt(payload, nonce: nonce, additional: header.to_slice)\nraw = Bytes.new(header.size + ciphertext.size)\nheader.to_slice.move_to(raw)\nciphertext.move_to(raw + header.size)\nBase64.urlsafe_encode(raw.to_slice)\n"}}],"types":[{"html_id":"suzuri/Suzuri/Error","path":"Suzuri/Error.html","kind":"module","full_name":"Suzuri::Error","name":"Error","abstract":false,"locations":[{"filename":"src/suzuri.cr","line_number":90,"url":null}],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"const":false,"namespace":{"html_id":"suzuri/Suzuri","kind":"module","full_name":"Suzuri","name":"Suzuri"},"types":[{"html_id":"suzuri/Suzuri/Error/DecodeError","path":"Suzuri/Error/DecodeError.html","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError","abstract":false,"superclass":{"html_id":"suzuri/Exception","kind":"class","full_name":"Exception","name":"Exception"},"ancestors":[{"html_id":"suzuri/Exception","kind":"class","full_name":"Exception","name":"Exception"},{"html_id":"suzuri/Reference","kind":"class","full_name":"Reference","name":"Reference"},{"html_id":"suzuri/Object","kind":"class","full_name":"Object","name":"Object"}],"locations":[{"filename":"src/suzuri.cr","line_number":91,"url":null}],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"const":false,"subclasses":[{"html_id":"suzuri/Suzuri/Error/DecryptionFailed","kind":"class","full_name":"Suzuri::Error::DecryptionFailed","name":"DecryptionFailed"},{"html_id":"suzuri/Suzuri/Error/MalformedInput","kind":"class","full_name":"Suzuri::Error::MalformedInput","name":"MalformedInput"},{"html_id":"suzuri/Suzuri/Error/TokenExpired","kind":"class","full_name":"Suzuri::Error::TokenExpired","name":"TokenExpired"}],"namespace":{"html_id":"suzuri/Suzuri/Error","kind":"module","full_name":"Suzuri::Error","name":"Error"}},{"html_id":"suzuri/Suzuri/Error/DecryptionFailed","path":"Suzuri/Error/DecryptionFailed.html","kind":"class","full_name":"Suzuri::Error::DecryptionFailed","name":"DecryptionFailed","abstract":false,"superclass":{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},"ancestors":[{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},{"html_id":"suzuri/Exception","kind":"class","full_name":"Exception","name":"Exception"},{"html_id":"suzuri/Reference","kind":"class","full_name":"Reference","name":"Reference"},{"html_id":"suzuri/Object","kind":"class","full_name":"Object","name":"Object"}],"locations":[{"filename":"src/suzuri.cr","line_number":94,"url":null}],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"const":false,"namespace":{"html_id":"suzuri/Suzuri/Error","kind":"module","full_name":"Suzuri::Error","name":"Error"}},{"html_id":"suzuri/Suzuri/Error/MalformedInput","path":"Suzuri/Error/MalformedInput.html","kind":"class","full_name":"Suzuri::Error::MalformedInput","name":"MalformedInput","abstract":false,"superclass":{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},"ancestors":[{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},{"html_id":"suzuri/Exception","kind":"class","full_name":"Exception","name":"Exception"},{"html_id":"suzuri/Reference","kind":"class","full_name":"Reference","name":"Reference"},{"html_id":"suzuri/Object","kind":"class","full_name":"Object","name":"Object"}],"locations":[{"filename":"src/suzuri.cr","line_number":92,"url":null}],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"const":false,"namespace":{"html_id":"suzuri/Suzuri/Error","kind":"module","full_name":"Suzuri::Error","name":"Error"}},{"html_id":"suzuri/Suzuri/Error/TokenExpired","path":"Suzuri/Error/TokenExpired.html","kind":"class","full_name":"Suzuri::Error::TokenExpired","name":"TokenExpired","abstract":false,"superclass":{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},"ancestors":[{"html_id":"suzuri/Suzuri/Error/DecodeError","kind":"class","full_name":"Suzuri::Error::DecodeError","name":"DecodeError"},{"html_id":"suzuri/Exception","kind":"class","full_name":"Exception","name":"Exception"},{"html_id":"suzuri/Reference","kind":"class","full_name":"Reference","name":"Reference"},{"html_id":"suzuri/Object","kind":"class","full_name":"Object","name":"Object"}],"locations":[{"filename":"src/suzuri.cr","line_number":93,"url":null}],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"const":false,"namespace":{"html_id":"suzuri/Suzuri/Error","kind":"module","full_name":"Suzuri::Error","name":"Error"}}]},{"html_id":"suzuri/Suzuri/Token","path":"Suzuri/Token.html","kind":"struct","full_name":"Suzuri::Token","name":"Token","abstract":false,"superclass":{"html_id":"suzuri/Struct","kind":"struct","full_name":"Struct","name":"Struct"},"ancestors":[{"html_id":"suzuri/Struct","kind":"struct","full_name":"Struct","name":"Struct"},{"html_id":"suzuri/Value","kind":"struct","full_name":"Value","name":"Value"},{"html_id":"suzuri/Object","kind":"class","full_name":"Object","name":"Object"}],"locations":[{"filename":"src/suzuri.cr","line_number":97,"url":null}],"repository_name":"suzuri","program":false,"enum":false,"alias":false,"const":false,"namespace":{"html_id":"suzuri/Suzuri","kind":"module","full_name":"Suzuri","name":"Suzuri"},"instance_methods":[{"html_id":"payload:Bytes-instance-method","name":"payload","doc":"Returns the decrypted payload as `Bytes`","summary":"<p>Returns the decrypted payload as <code>Bytes</code></p>","abstract":false,"location":{"filename":"src/suzuri.cr","line_number":109,"url":null},"def":{"name":"payload","return_type":"Bytes","visibility":"Public","body":"@payload"}},{"html_id":"timestamp:Time-instance-method","name":"timestamp","doc":"Returns the creation timestamp","summary":"<p>Returns the creation timestamp</p>","abstract":false,"location":{"filename":"src/suzuri.cr","line_number":106,"url":null},"def":{"name":"timestamp","return_type":"Time","visibility":"Public","body":"@timestamp"}},{"html_id":"to_s:String-instance-method","name":"to_s","doc":"Returns the decrypted payload as `String`","summary":"<p>Returns the decrypted payload as <code>String</code></p>","abstract":false,"location":{"filename":"src/suzuri.cr","line_number":112,"url":null},"def":{"name":"to_s","return_type":"String","visibility":"Public","body":"String.new(@payload)"}}]}]}]}})
\ No newline at end of file
diff --git a/shard.yml b/shard.yml
index a7ac476..e9fc857 100644
--- a/shard.yml
+++ b/shard.yml
@@ -1,5 +1,5 @@
 name: suzuri
-version: 2.0.0
+version: 2.0.1
 
 authors:
   - moe <moe@busyloop.net>
@@ -14,11 +14,12 @@ license: MIT
 dependencies:
   sodium:
     github: didactic-drunk/sodium.cr
-    version: ~> 1.2.2
+    # version: = 1.2.2
+    commit: 2e1856fedb58c80b6be21c0045481ff4e93ab7f3
 
   zstd:
     github: didactic-drunk/zstd.cr
-    version: ~> 1.1.0
+    version: ~> 1.2.0
 
 development_dependencies:
   timecop:
diff --git a/src/suzuri.cr b/src/suzuri.cr
index 400e076..9cc32fb 100644
--- a/src/suzuri.cr
+++ b/src/suzuri.cr
@@ -3,8 +3,6 @@ require "zstd"
 require "base64"
 
 module Suzuri
-  VERSION = "1.0.2"
-
   # Encodes a Suzuri token.
   #
   # **Examples:**
@@ -26,7 +24,7 @@ module Suzuri
                   timestamp : Time = Time.utc,
                   compress_level = 3,
                   compress_threshold : UInt64 = 512) : String
-    cipher = Token::CIPHER.new(Sodium::SecureBuffer.new(key.to_slice))
+    cipher = Token::CIPHER.new(Sodium::SecureBuffer.copy_from(key.to_slice))
     nonce = Sodium::Nonce.random
 
     header = IO::Memory.new(Token::HEADER_SIZE)
@@ -75,7 +73,7 @@ module Suzuri
     end
 
     begin
-      cipher = Token::CIPHER.new(Sodium::SecureBuffer.new(key.to_slice))
+      cipher = Token::CIPHER.new(Sodium::SecureBuffer.copy_from(key.to_slice))
       payload = cipher.decrypt(ciphertext, nonce: nonce, additional: header.to_slice)
       if raw[0] == 0x81_u8
         dctx = Zstd::Decompress::Context.new
