Add debug commands to proguard config.

Change-Id: I7f435b1e3dc56261542d7b4bbc741e331d62e75a
Reviewed-on: http://gerrit.dmdirc.com/2907
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Add an annotation for exported methods.

Change-Id: I2bea7440d9e61145bb68f02dff55ec52d11ba1af
Reviewed-on: http://gerrit.dmdirc.com/2908
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Update submodules: plugins (new commits)

plugins:
    0f1fd3b Chris Smith <chris@dmdirc.com>
            Add @Exported annotation to all exported methods.

            Depends-On: I2bea7440d9e61145bb68f02dff55ec52d11ba1af
            Gerrit: http://gerrit.dmdirc.com/2909

Change-Id: I50d539e6ac46d18e8c7f1b1dfcc1a1dd34b3b436