Switch from Travis CI to GitHub Actions

[omus]

No description provided.

[codecov]

Codecov Report

Merging #37 (78c800e) into master (0795578) will increase coverage by 8.34%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #37      +/-   ##
==========================================
+ Coverage   74.44%   82.78%   +8.34%     
==========================================
  Files           1        1              
  Lines          90      122      +32     
==========================================
+ Hits           67      101      +34     
+ Misses         23       21       -2     

Impacted Files	Coverage Δ
src/MappedArrays.jl	82.78% <100.00%> (+8.34%)	⬆️

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[johnnychen94]

I prefer to avoid duplicated CI running when the PR is from the repo, so here limit push to master branch only.

Suggested change

	on:
	- push
	- pull_request
	on:
	create:
	tags:
	push:
	branches:
	- master
	pull_request:
	schedule:
	- cron: '20 00 1 * *'

Also, CI on tags and cron jobs sound worth to have.

[omus]

I don't think on: create is a thing. I'll update the settings appropriately though

[timholy]

Thanks, @omus!

FYI if you have many workflow updates, julia-actions/MassInstallAction.jl#27 may be handy (does key & secret updates and updates for TagBot, Documenter, and CI). Handling the badge was a nice touch I hadn't yet considered.