refactored distance to metrics
refactored distance to metrics

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