- some fixed to the makefile
- added `run_maybe_parallel` in `muutils.parallel`
- added `tqdm` and `multiprocess` in the extra `parallel`
- lots of tests for everything

Commits:

- added get_fn_allowed_kwargs with tests (3cbd38a)
- fix makefile (eec3152)
- added tqdm and multiprocess in extra 'parallel' (7086172)
- format (74c63d5)
- wip parallelization fn (b12505b)
- wip (fba1b9c)
- wip (aec56a3)
- wip (0fac02b)
- run format (2db6f93)
- fix makefile typo (2c86fd4)
- fix typing (06d2cf0)
- fix typing (4231fe7)
- fix typing by just always importing multiprocess -- dev install should include all extras (a757aad)
- bump version to 0.6.18 (d39de5c)
- rebuild docs (743c47e)
- make version, update gitignore for coverage artifacts (ca2ed67)
- rebuild docs (df910ff)