Added setting 'retractionAmountPrime' specifying the amount of filament added to the prime after the retraction.
Introducing raftFanSpeed and raftSurfaceSpeed
Merge pull request #72 from Gregwar/raft_parameters

Introducing raftFanSpeed and raftSurfaceSpeed
Merge pull request #71 from Ryoko/AddToPrime

Added setting 'retractionAmountPrime'
Fix the problem where very high polygon circles generate a lot of very small segments
Merge branch 'master' of github.com:Ultimaker/CuraEngine