Added a method to reset a MultiArrayView to an invalid state (as after default construction).
Added a method to reset a MultiArrayView to an invalid state (as after default construction).

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