Multifits

[mpound]

Clean merge of multifits into release 0.2.0

[tchamberlin]

There are two issues with pre-commit here:

1. Neither multifits nor release-0.2.0 are compliant with their own pre-commit hooks. pre-commit run --all-files should be a no-op, but it results in changes on both of these branches
2. .pre-commit-config.yaml is not identical between these two branches

A potential path forward:

1. Create release-0.2.0-tmp, off of current release-0.2.0
2. On release-0.2.0-tmp, check out multifits version of .pre-commit-config.yaml
3. On release-0.2.0-tmp, do pre-commit run --all-files, then commit something like "Run pre-commit on all files"
4. On multifits, do pre-commit run --all-files, then commit something like "Run pre-commit on all files"
5. Then start the merge

That way you have the same formatting applied on both branches, which should remove any formatting-specific diffs/conflicts

Note that this will only be an issue short term, because we still don't have the pre-commit hooks run/enforced on all branches

[mpound]

Thanks, I will do this.