Added breaking test for JSONP support via Rack::JSONP (core issue is likely to be more generic and centered around middleware/formatter etc.)
Potential fix for wrong execution order of Rack Middleware
#345 / #346 Fix for wrong execution order of Rack Middleware
Updated changelog to point to pull request issue
Merge pull request #352 from Deckchair/master

Change order of Rack middleware execution. Fixes issues experienced with JSONP and Grape Entities