Recent files are now populated upon tab close.
Fix 'Gdk-CRITICAL:gdk_window_invalidate_rect_full' warnigns
Fix todo
Add a 'Quit' item in menu and toolbar
gtk_text_buffer_set_modified is now used to track save state.
Move 'Find', 'Go to line' etc. to a 'Search' menu in the top bar. Also add a toolbar item for 'Find'
Merge branch 'master' of git://github.com/AmatCoder/Aporia into AmatCoder-master

Conflicts:
	aporia.nim
	todo.markdown