Added basic support for reporting via IRC

This closes #38.

Also change the imporitng of reporters in reporting.py, to enable mocking for testing.

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Added optional dependency on IRC to setup

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Added notify option to name users in IRC channel

Signed-off-by: Stefan Marr <git@stefan-marr.de>