Reformat and check formatting in CI build

[fthomas]

No description provided.

[codecov-commenter]

Codecov Report

Merging #65 into master will not change coverage.
The diff coverage is 59.09%.

@@           Coverage Diff           @@
##           master      #65   +/-   ##
=======================================
  Coverage   80.35%   80.35%           
=======================================
  Files           6        6           
  Lines         112      112           
=======================================
  Hits           90       90           
  Misses         22       22           

Impacted Files	Coverage Δ
...ala/io/circe/testing/golden/GoldenCodecTests.scala	58.82% <ø> (ø)
...main/scala/io/circe/testing/golden/Resources.scala	100.00% <ø> (ø)
...e/testing/golden/ResourceFileGoldenCodecLaws.scala	46.66% <20.00%> (ø)
...cala/io/circe/testing/golden/GoldenCodecLaws.scala	80.00% <83.33%> (ø)
...e-1/src/main/scala/io/circe/examples/package.scala	100.00% <100.00%> (ø)

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[travisbrown]

Thanks!

[fthomas]

Merged master and reformatted again with Scalafmt 2.7.0.

[travisbrown]

Thanks, @fthomas!