improved documentation of setCompression()
improved documentation of setCompression()

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