Accept more prefixes for PR titles

[fepegar]

Currently, we have the following:

hi-ml/.github/workflows/check-pr-title.yml

Line 14 in c185873

allowed_prefixes: 'ENH,BUG,STYLE,DOC,DEL' # title should start with the given prefix

We might want to be more precise or accurate sometimes. I've seen others that could be useful. For example:

• TEST: to add or modify tests
• FIX: to fix something that is not necessarily a BUG such as a typo
• MNT: maintenance, to upgrade a package version (ENH: Upgrade PyTorch Lightning to 1.6.4  #453) or stuff related to packaging, linting, CI, etc.
• STY: as a shorter alternative to STYLE
• REL: for release commits
• WIP: for work in progress (I don't like this, I think using drafts PRs is better)
• COMP: fix e.g. warnings (I think it comes from "compiling" or similar)
• PERF: improve performance

Some sources:

• ITK: https://github.com/InsightSoftwareConsortium/ITK/blob/master/CONTRIBUTING.md#commit-messages
• NiBabel: https://github.com/nipy/nibabel/commits/master

[Shruthi42]

Maybe we could have prefixes related to deprecating code as well. What is the recommended prefix for code deprecation PRs at the moment, DEL?

[fepegar]

Maybe we could have prefixes related to deprecating code as well. What is the recommended prefix for code deprecation PRs at the moment, DEL?

I guess DEL would make sense for that, yes. These are all soft rules, anyway.

[ant0nsc]

REL, COMP don't really apply to us, I would drop those. And clearly no WIP. The others sound OK to me.

[fepegar]

Addressed in #505.