Migrate from Travis to GitHub actions

[aleksihakli]

Travis CI has a new pricing model which places limits on open source.

• https://blog.travis-ci.com/2020-11-02-travis-ci-new-billing
• https://www.jeffgeerling.com/blog/2020/travis-cis-new-pricing-plan-threw-wrench-my-open-source-works

Many projects are moving to GitHub Actions instead, including Jazzband projects:

• https://github.com/orgs/jazzband/projects/1
• Should we disable travis? help#206

This is based on jazzband/contextlib2#26.

TODO:

• @jezdez to add JAZZBAND_RELEASE_KEY to the repo secrets.

[aleksihakli]

@jezdez opened a PR for django-ical in the same run, this supposedly also needs an updated PyPI mirror key?

[jezdez]

@jezdez opened a PR for django-ical in the same run, this supposedly also needs an updated PyPI mirror key?

Yes, could you please use the PR text as I've used in the other Jazzband projects? E.g. jazzband/django-pipeline#738

If you add me to the PR text it allows me track the progress better.

[jezdez]

FTR I have more time again later this week to work on those ports and will get back to you then withr reviews

[codecov]

Codecov Report

Merging #43 (6c59a8f) into master (e9c7909) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master      #43   +/-   ##
=======================================
  Coverage   96.97%   96.97%           
=======================================
  Files           5        5           
  Lines         695      695           
  Branches       43       43           
=======================================
  Hits          674      674           
  Misses          9        9           
  Partials       12       12           

Impacted Files	Coverage Δ
django_ical/feedgenerator.py	96.87% <100.00%> (ø)
django_ical/tests/test_feed.py	100.00% <100.00%> (ø)

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[aleksihakli]

Sure thing, I'll use the full project and issue IDs in any upcoming PRs.