Color profile convertor action
We'll take the python cms module from sk1, of which the author has no problem sharing it with us. As it is one file it is not worth a dependency and the code is very stable. As this is not pure python our setup.py should be adapted (see sk1 setup.py).
Color management is a highly requested feature for Phatch. I've studied all available options and this is the best so far. I have already a cms action which needs to be adapted to the library. More explanation is better on irc.