Add CHANGELOG for 1.4.7
Add CHANGELOG for 1.4.7

mwpastore/sinatra,burningTyger/sinatra,JonMidhir/sinatra,sinatra/sinatra,jkowens/sinatra,burningTyger/sinatra,ryanshaw/sinatra,JonMidhir/sinatra,jkowens/sinatra,sinatra/sinatra,ryanshaw/sinatra,mwpastore/sinatra,jkowens/sinatra,mwpastore/sinatra,JonMidhir/sinatra,burningTyger/sinatra