change gmagick.resize signature
change gmagick.addText signature
change gmagick.mosaic signature
change gmagick.composite signature
parallel 3 preview pic composite
change preview picture size
Merge branch 'anthpack-v2' into bitdewy/master

* anthpack-v2:
  change preview picture size
  parallel 3 preview pic composite
  change gmagick.composite signature
  change gmagick.mosaic signature
  change gmagick.addText signature
  change gmagick.resize signature