Migrating to Stk.
Add iconv bindings.

Next release:
- ocaml mode: use information from .cmt files instead of .annot files,
  and try hard to find .cmt file (looking in all .cmt files in _build dir)
- use Logs_fmt for logging
- fix: set panedbox divider position to half of width/height
  when splitting views

Release 3.0:
- upgrade to ocaml 4.12.0, lablgtk3, lablgtk3-extras 3.0,
- use ocf (with json syntax) instead of config_file for configuration files
- do not depend on camlp4 any more
- fix: better handling of 'with' keyword in ocaml indentation lexer
- fix: ocaml lexer used for indendation to handle escaped characters in strings
- use Lwt
- new "pop_last_hidden_view" and "popup_pick_hidden_view"
- various fixes

Release 2.03:
- fix #6 (chamo.byte could not use chamo modules)
- move to -safe-string mode
- replace calls to deprecated functions
- fix warning when searching text (see https://bugzilla.gnome.org/show_bug.cgi?id=606751)
