Add support for auto-delete of branches

[epage]

Prerequisites:

• Github Docs
• I couldn't find API availability - however I'm not that familiar with GitHub API docs so it might be.

New Feature

Request: A config field allowing the repository settings "Automatically delete head branches " to be controlled.

[travi]

have you tried delete_branch_on_merge as mentioned in the example in the readme? that should be the attribute associated with this

[epage]

Looks like I missed it because I was using the example from https://github.com/apps/settings rather than https://github.com/probot/settings

[travi]

no problem. we'll work on getting that updated

when in doubt, but sure to also check the linked api docs, like https://docs.github.com/en/rest/reference/repos#update-a-repository for the repository section. that provides the full list of options, which may be more than we've specifically called out in our docs for the app