Use helper addSbtCoursier in project/plugins.sbt

[ghost]

ref https://gitter.im/typelevel/cats-dev?at=5ab0392be4d1c636041b5183

[kailuowang]

I was assuming that this would allow the sbt plugins and their dependencies to be loaded using coursier as well?

[ghost]

I was assuming that this would allow the sbt plugins and their dependencies to be loaded using coursier as well?

No idea, tbh :) I thought I would just PR the change and see if there is any difference. Also, the comments in the chat will be lost otherwise.

[codecov-io]

Codecov Report

Merging #2205 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2205   +/-   ##
=======================================
  Coverage   94.83%   94.83%           
=======================================
  Files         333      333           
  Lines        5789     5789           
  Branches      222      211   -11     
=======================================
  Hits         5490     5490           
  Misses        299      299

Impacted Files	Coverage Δ
core/src/main/scala/cats/data/Const.scala	100% <0%> (ø)	⬆️

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[ghost]

See commit comment coursier/coursier@a743f11

[ceedubs]

Thanks @BennyHill. LGTM