Bump to 3.0.3

Gemfile.lock

 PATH
   remote: .
   specs:
-    paperclip (3.0.2)
+    paperclip (3.0.3)
       activemodel (>= 3.0.0)
       activerecord (>= 3.0.0)
       activesupport (>= 3.0.0)

NEWS

-Unreleased:
+New in 3.0.3:
 
 * Bug fix: ThumbnailProcessor now correctly detects and preserve animated GIF.
 * Bug fix: File extension is now preserved in generated Tempfile from adapter.

lib/paperclip/version.rb

 module Paperclip
-  VERSION = "3.0.2" unless defined? Paperclip::VERSION
+  VERSION = "3.0.3" unless defined? Paperclip::VERSION
 end