vigranumpy: fixed uint8 watershed signature
vigranumpy: fixed uint8 watershed signature

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