Switch from zenodo.json to CITATION.cff, add contributors

[effigies]

We haven't been updating contributors properly. I think it will generally be easier to have people add themselves to CITATION.cff when they do contribute.

There isn't a distinction between creators and contributors, so that's one downside here.

Please confirm your ORCIDs, names and affiliations: @bpinsard @jbanusco @mvdoc @jmarabotto @feilong @Shotgunosine @shnizzedy @coryshain

[mvdoc]

LGTM. Thanks!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.38%. Comparing base (4136681) to head (7ee94ba).
⚠️ Report is 107 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #237      +/-   ##
==========================================
+ Coverage   95.15%   95.38%   +0.22%     
==========================================
  Files          28       28              
  Lines        2933     2948      +15     
==========================================
+ Hits         2791     2812      +21     
+ Misses        142      136       -6     

Flag	Coverage Δ
unittests	95.15% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[coryshain]

It's nice of you to include me in the citation! My info there is right. But I also modified exactly 2 lines of code so I don't think you need to credit me. I'll leave that up to you.

[feilong]

Thanks for putting this together @effigies ! It looks great to me.

[oesteban]

is this overriden by releases?

[effigies]

It gets overridden by Zenodo, but we should probably make updating it part of the release process so it's up-to-date in git and source archives.