Criawips

Got some more feedback about people who like criawips. One new guy wants to contribute, he's currently working on the save operation. This and the preferences work from Adrien will make some of the cool improvements for 0.0.9.

I'm still working on less visible stuff like refactoring, implementing some working rendering framework (maybe I'll extract some general MVC code into a small template library).

One thing I'm working on right now is to fix the debugging messages of criawips (a normal build currently displays more than 80 lines of debugging messages, opening a file raises the number easily above 1200). I want it to be there, easily to be disabled for "production builds" (e.g. distribution's packages) like G_DISABLE_ASSERT disables assertions. The most important thing is that I'd like to listen for the classes/functions/passages to be debugged by using an environment variable.