Bump for 0.4 release
Add ChangeLog
Change 'gobject' to 'glib'

The functions we use are technically part of GLib. They're still
exported under GObject for compatibility reasons, but this will be
dropped sometime in the future [1].

[1]: http://git.gnome.org/browse/pygobject/commit/?id=483c86267f2623eaa88d
Rename desktop entry to all-lower-case

GNOME Shell appears to normalize desktop entry IDs (basenames)
to all-lower-case. I have no idea whether this is standard,
but if we consistently use lower-case we won't have to
worry about it.
Set X-GNOME-UsesNotifications so we appear in gnome-control-center
Merge pull request #46 from smcv/notifications

Improved notifications in GNOME Shell 3.8