Fix import PkgTemplates and using PkgTemplates on the latest Julia master

[DilumAluthge]

This fixes #294 for me locally.

[DilumAluthge]

cc: @christopher-dG @nickrobinson251

[DilumAluthge]

The test failures are unrelated to this PR, and seem to be caused by Cassette.

[codecov]

Codecov Report

Merging #295 (e180f3a) into master (4302ecb) will decrease coverage by 0.49%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #295      +/-   ##
==========================================
- Coverage   94.40%   93.91%   -0.50%     
==========================================
  Files          20       20              
  Lines         608      608              
==========================================
- Hits          574      571       -3     
- Misses         34       37       +3     

Impacted Files	Coverage Δ
src/plugins/documenter.jl	84.05% <ø> (ø)
src/plugins/tests.jl	100.00% <ø> (ø)
src/show.jl	90.47% <0.00%> (-4.77%)	⬇️
src/plugins/git.jl	91.52% <0.00%> (-3.39%)	⬇️

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[nickrobinson251]

Doesn't this mean there was a breaking change to Pkg?

I thought breaking changes to stdlibs weren't allowed (in minor release of Julia)?

[DilumAluthge]

Yeah.

JuliaLang/Pkg.jl#2477 (comment)

[nickrobinson251]

Yeah.

JuliaLang/Pkg.jl#2477 (comment)

Cool -- let's wait for the outcome of that discussion. My understanding is this should be fixed at the Pkg level, not here.

Edit: opened JuliaLang/Pkg.jl#2587

[DilumAluthge]

Closing in favor of JuliaLang/Pkg.jl#2589

On a separate note, do you know why CI is failing?

[mjram0s]

Closing in favor of JuliaLang/Pkg.jl#2589

On a separate note, do you know why CI is failing?

Tests on 1.6 failing because #287