Add nick keep plugin.

Fix XMPP plugin for parser changes.

De-channel the CSD topic UI.

Add coveralls support, maybe.

Fix the nick colour plugin.

Tidy the nick colours plugin some more.

Start fixing the nick colour plugin.

Use the git-version plugin.

Remove getLookAndFeel method from SwingController.

Remove deprecated getMainFRame method in SwingController.

Remove getVersion, about dialog can query directly.

DI the windows media source plugin.

Fix QAuth plugin.

Initial work on QAuth plugin.

Start making the NotificationManager more sane.

Use PackingTable for the errors dialog.

Add an interface for handlers, rework the manager to always use
the interface instead of doing dodgy exported stuff.

Use an explicit comparator to sort plugins.

PluginInfo randomly implements Comparable and compares itself
by name, which I want to kill.

Fix a couple of plugin ctors.

Issue 281

Add skeleton Q Auth plugin.