Regenerate gemspec for version 2.1.1

VERSION

@@ -1 +1 @@
-2.1.0
+2.1.1

unipept.gemspec

@@ -2,16 +2,16 @@
 # DO NOT EDIT THIS FILE DIRECTLY
 # Instead, edit Jeweler::Tasks in Rakefile, and run 'rake gemspec'
 # -*- encoding: utf-8 -*-
-# stub: unipept 2.1.0 ruby lib
+# stub: unipept 2.1.1 ruby lib
 
 Gem::Specification.new do |s|
   s.name = "unipept".freeze
-  s.version = "2.1.0"
+  s.version = "2.1.1"
 
   s.required_rubygems_version = Gem::Requirement.new(">= 0".freeze) if s.respond_to? :required_rubygems_version=
   s.require_paths = ["lib".freeze]
   s.authors = ["Bart Mesuere".freeze, "Pieter Verschaffelt".freeze, "Toon Willems".freeze, "Tom Naessens".freeze]
-  s.date = "2020-02-12"
+  s.date = "2020-04-16"
   s.description = "    Command line interface to the Unipept (http://unipept.ugent.be) web services\n    (pept2lca, taxa2lca, pept2taxa, pept2prot and taxonomy) and some utility\n    commands for handling proteins using the command line.\n".freeze
   s.email = "unipept@ugent.be".freeze
   s.executables = ["unipept".freeze, "prot2pept".freeze, "peptfilter".freeze, "uniprot".freeze]
@@ -88,7 +88,7 @@ Gem::Specification.new do |s|
   s.homepage = "http://unipept.ugent.be".freeze
   s.licenses = ["MIT".freeze]
   s.required_ruby_version = Gem::Requirement.new(">= 2.0.0".freeze)
-  s.rubygems_version = "2.7.7".freeze
+  s.rubygems_version = "3.0.3".freeze
   s.summary = "Command line interface to Unipept web services.".freeze
 
   if s.respond_to? :specification_version then