v 0.2.0 : 
- Enable compilation on non native platform ( there is a problem when installing .a file in stub ).
- Check all exported functions ( cf GettextUtils )
- Correct the BUG: related to bug from ocaml-fileutils
- Reread the code to improve general layout ( naming scheme, exception name... ie better style )
- Intercept problem when recoding string ( charset ), errors should be wrap inside a failsafe or
  at least raise a coherent exception.

v 0.3.0 :
- Better parse comments, to keep licence et al 
- Try to be faster than gettext C library
- Write a patch for xgettext et al
