make GitHubActions a default plugin

[musoke]

Fixes #357

[codecov]

Codecov Report

Merging #399 (4f3920e) into master (5cc1711) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #399   +/-   ##
=======================================
  Coverage   94.45%   94.45%           
=======================================
  Files          22       22           
  Lines         667      667           
=======================================
  Hits          630      630           
  Misses         37       37           

Impacted Files	Coverage Δ
src/template.jl	97.65% <ø> (ø)

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[ericphanson]

Was this breaking? I had some code that called

exp_template = Template(;
                        authors=["Beacon Biosignals, Inc"],
                        dir=parent_subdir,
                        julia=v"1.8.5",
                        plugins=[ProjectFile(; version=v"0.0.1"),
                                 SrcDir(; file=src_template),
                                 !Tests, !Readme, !Git, !License, !CompatHelper, !TagBot])

and now it errors with

ERROR: LoadError: GitHubActions: Git hosting service username is required, set one with keyword `user="<username>"`

(I will just pin 0.7.34 until I have a chance to update it, so I don't really mind that much, but maybe one should be careful w/ changing defaults that add requirements)

[musoke]

It certainly wasn't meant to be breaking, but it does seem that you have identified a breakage. I don't think the tests check any cases without these variables set.

[oxinabox]

Possibly we should revert this?

Maybe this is a good excuse to go to v1.0.0

[musoke]

I will defer to you on that.