Thank you for considering contributing to Delly.
If you have noticed a bug in Delly please search the issue tracker to see if someone else in the community had already created a ticket. If that is not the case please create one!
I try to fix all bugs as soon as possible but if you want to work on one yourself please consider using the fork and pull request mechanism of github.
Please consider using the Delly discussion group delly-users for usage and installation questions.
If you want to suggest a new feature please go ahead and open an issue!