vigranumpy: added vector distance transforms
vigranumpy: added vector distance transforms

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