[Weekly report] Week 7: GObject-Introspection and Python

[Simon van der Linden <simon vanderlinden agora eu org>]

Last week, I rewrote a large part of the Python code of PyBank, to make
it simpler and fix a few things, non-default constructors for instance.

Then, it took me a whole day to find a bug, which was hard to find (when
the garbage collector segfaults, it's always tricky), but easy to solve.

I'm now refactoring/cleaning the whole module.