Bump version to 0.6.0.2
Bump version to 0.6.0.2

Someone else released a version claiming to be 0.6.0.1 - boo!

JPMoresmau/aeson,roelvandijk/aeson,bwo/aeson,neobrain/aeson,nurpax/aeson,beni55/aeson,dmjio/aeson,plaprade/aeson,roelvandijk/aeson,sol/aeson,sol/aeson,23Skidoo/aeson,jkarni/aeson,aelve/json-x,lykahb/aeson,abbradar/aeson,sol/aeson,timmytofu/aeson,neobrain/aeson,SeanRBurton/aeson