merge package template from Kronos-Tools/npm-package-template

[arlac77]

package.json

• chore(devDependencies): update rollup@^0.51.2 from template

[coveralls]

Coverage remained the same at 90.517% when pulling 68b1eb4 on template-sync-1 into 425f942 on master.

[codecov-io]

Codecov Report

Merging #187 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #187   +/-   ##
=======================================
  Coverage   90.14%   90.14%           
=======================================
  Files           1        1           
  Lines          71       71           
=======================================
  Hits           64       64           
  Misses          7        7

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