deprecate some not needed statement filter methods

CHANGELOG.md

@@ -4,6 +4,10 @@ CHANGELOG
 1.1.0
 -----
 
+* The `StatementsFilter::format()`, `StatementsFilter::includeAttachments()`,
+  and `StatementsFilter::excludeAttachments()` methods are deprecated and will
+  be removed in 2.0.
+
 * Added a `$content` attribute to the `Attachment` class to make it possible
   to attach the raw content to an attachment.
 

UPGRADE.md

@@ -4,6 +4,10 @@ UPGRADE
 Upgrading from 1.0 to 1.1
 -------------------------
 
+* The `StatementsFilter::format()`, `StatementsFilter::includeAttachments()`,
+  and `StatementsFilter::excludeAttachments()` methods are deprecated and will
+  be removed in 2.0.
+
 * Constructing an `Attachment` instance with specifying neither a file URL
   nor the raw attachment content throws an `\InvalidArgumentException`.
 

src/StatementsFilter.php

@@ -199,6 +199,8 @@ public function limit($limit)
      */
     public function format($format)
     {
+        @trigger_error(sprintf('The "%s()" method is deprecated since 1.1 and will be removed in 2.0.', __METHOD__), E_USER_DEPRECATED);
+
         if (!in_array($format, array('ids', 'exact', 'canonical'))) {
             throw new \InvalidArgumentException('Unknown format '.$format.' given');
         }
@@ -215,6 +217,8 @@ public function format($format)
      */
     public function includeAttachments()
     {
+        @trigger_error(sprintf('The "%s()" method is deprecated since 1.1 and will be removed in 2.0.', __METHOD__), E_USER_DEPRECATED);
+
         $this->filter['attachments'] = 'true';
 
         return $this;
@@ -227,6 +231,8 @@ public function includeAttachments()
      */
     public function excludeAttachments()
     {
+        @trigger_error(sprintf('The "%s()" method is deprecated since 1.1 and will be removed in 2.0.', __METHOD__), E_USER_DEPRECATED);
+
         $this->filter['attachments'] = 'false';
 
         return $this;