lux isn't an official Exherbo project, but given that it is developed by an
Exherbo developer, and is used by mostly Exherbo users, contributions of code
are accepted through either GitHub's pull requests, or through
Exherbo's Gerrit instance.
A .gitreview file is in the root of the repository so that you can use Gerrit to contribute to lux with either git-review or git-gerrit.
If you have multiple features/fixes/things done in one commit, please split them up into multiple commits, so that they can be reviewed seperately.
Bugs should be reported to GitHub's issue tracker. It is recommended that you read Simon Tatham's excellent article, "How to Report Bugs Effectively".