- important KeepContours fix: check for already-labelled pixels would not   take the contour label into account and thus let regions flood over the   boundaries (though, there's still a bug, but to find that I found committing   those changes first helpful) - Diff2D -> Point2D changes
- important KeepContours fix: check for already-labelled pixels would not
  take the contour label into account and thus let regions flood over the
  boundaries (though, there's still a bug, but to find that I found committing
  those changes first helpful)
- Diff2D -> Point2D changes

mmuellner/vigra,timoMa/vigra,psteinb/vigra,stuarteberg/vigra,funkey/vigra,psteinb/vigra,martinsch/vigra,cbecker/vigra,hmeine/vigra,hmeine/vigra,funkey/vigra,DaveRichmond-/vigra,cha007/vigra,cbecker/vigra,ThomasWalter/vigra,xiwei-zhang/vigra,dstoe/vigra,DaveRichmond-/vigra,dstoe/vigra,cha007/vigra,funkey/vigra,cbecker/vigra,capturePointer/vigra,psteinb/vigra,dagophil/vigra,cha007/vigra,capturePointer/vigra,timoMa/vigra,ThomasWalter/vigra,stuarteberg/vigra,mmuellner/vigra,ThomasWalter/vigra,stuarteberg/vigra,dagophil/vigra,xiwei-zhang/vigra,funkey/vigra,cbecker/vigra,kod3r/vigra,stuarteberg/vigra,mmuellner/vigra,dagophil/vigra,cha007/vigra,psteinb/vigra,ThomasWalter/vigra,dagophil/vigra,ThomasWalter/vigra,kod3r/vigra,capturePointer/vigra,psteinb/vigra,dstoe/vigra,funkey/vigra,capturePointer/vigra,kod3r/vigra,DaveRichmond-/vigra,kod3r/vigra,dstoe/vigra,dstoe/vigra,mmuellner/vigra,martinsch/vigra,timoMa/vigra,capturePointer/vigra,kod3r/vigra,DaveRichmond-/vigra,stuarteberg/vigra,cbecker/vigra,timoMa/vigra,cha007/vigra,cha007/vigra,capturePointer/vigra,xiwei-zhang/vigra,xiwei-zhang/vigra,funkey/vigra,hmeine/vigra,kod3r/vigra,dagophil/vigra,martinsch/vigra,stuarteberg/vigra,mmuellner/vigra,ThomasWalter/vigra,hmeine/vigra,psteinb/vigra,timoMa/vigra,timoMa/vigra,xiwei-zhang/vigra,xiwei-zhang/vigra,dagophil/vigra,hmeine/vigra,mmuellner/vigra,funkey/vigra,dstoe/vigra,dstoe/vigra,martinsch/vigra,psteinb/vigra,cha007/vigra,DaveRichmond-/vigra,ThomasWalter/vigra,hmeine/vigra,hmeine/vigra,martinsch/vigra,mmuellner/vigra,kod3r/vigra,DaveRichmond-/vigra,stuarteberg/vigra,cbecker/vigra,xiwei-zhang/vigra,DaveRichmond-/vigra,dagophil/vigra,martinsch/vigra,timoMa/vigra,capturePointer/vigra