Wrapping revisions

Hmm. This one is my bad, but I'll correct it anyway. It is technically not correct to say that object files are inaccessible to Python. They can be accessed in pure python by writing a wrapper using ctypes. Cffi provides similar functionality. I haven't had much luck getting either of those packages to behave nicely on windows though. It would be more correct to say something like "... but the functions in the \of file cannot be used directly as python functions."