Update CHANGELOG for 0.8.0

CHANGELOG.md

@@ -1,5 +1,29 @@
 # UNRELEASED
 
+# VERSION 0.8.0
+
+* Attributes can now have optional types.
+
+* A new DefaultSerializer ensures that POROs behave the same way as ActiveModels.
+
+* If you wish to override ActiveRecord::Base#to_Json, you can now require
+  'active_record/serializer_override'. We don't recommend you do this, but
+  many users do, so we've left it optional.
+
+* Fixed a bug where ActionController wouldn't always have MimeResponds.
+
+* An optinal caching feature allows you to cache JSON & hashes that AMS uses.
+  Adding 'cached true' to your Serializers will turn on this cache.
+
+* URL helpers used inside of Engines now work properly.
+
+* Serializers now can filter attributes with `only` and `except`:
+  
+  UserSerializer.new(user, only: [:first_name, :last_name])
+  UserSerializer.new(user, except: :first_name)
+
+* Basic Mongoid support. We now include our mixins in the right place.
+
 * On Ruby 1.8, we now generate an `id` method that properly serializes `id`
   columns. See issue #127 for more.