Bump to 0.4.0.

Adds the URL-safe SGIDs and removes Rails 4.1 support.

Author: kaspth

Gemfile.lock

@@ -1,8 +1,8 @@
 PATH
   remote: .
   specs:
-    globalid (0.3.7)
-      activesupport (>= 4.1.0)
+    globalid (0.4.0)
+      activesupport (>= 4.2.0)
 
 GEM
   remote: https://rubygems.org/

globalid.gemspec

@@ -1,7 +1,7 @@
 Gem::Specification.new do |s|
   s.platform    = Gem::Platform::RUBY
   s.name        = 'globalid'
-  s.version     = '0.3.7'
+  s.version     = '0.4.0'
   s.summary     = 'Refer to any model with a URI: gid://app/class/id'
   s.description = 'URIs for your models makes it easy to pass references around.'
 
@@ -16,7 +16,7 @@ Gem::Specification.new do |s|
   s.files        = Dir['MIT-LICENSE', 'README.md', 'lib/**/*']
   s.require_path = 'lib'
 
-  s.add_runtime_dependency 'activesupport', '>= 4.1.0'
+  s.add_runtime_dependency 'activesupport', '>= 4.2.0'
 
   s.add_development_dependency 'rake'
 end