eslint updates

[msimerson]

fixes #23

[codecov]

Codecov Report

Merging #24 into master will not change coverage.
The diff coverage is 81.25%.

@@           Coverage Diff           @@
##           master      #24   +/-   ##
=======================================
  Coverage   79.46%   79.46%           
=======================================
  Files           7        7           
  Lines         409      409           
  Branches      114      114           
=======================================
  Hits          325      325           
  Misses         84       84

Impacted Files	Coverage Δ
config.js	91.54% <100%> (ø)	⬆️
configfile.js	67.15% <73.52%> (ø)	⬆️

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