version bump

bumped to 3.0.4

3.0.3 release.

more formatting on plugin configs.

bumped to 3.0.1

Preparation for 3.0.0

Updates for 3.0.0-rc1 changes.

corrects an import problem on py2conv.

The current dir is not picked up during install using pip.
(travis-ci doesn't spot the mistake)

added a doc for BOT_EXTRA_BACKEND_DIR