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

[arlac77]

package.json

• chore(engines): update node@>=8.9.0 from template

[coveralls]

Coverage remained the same at 90.756% when pulling b96fb8d on template-sync-1 into a3011e2 on master.

[codecov-io]

Codecov Report

Merging #184 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #184   +/-   ##
=======================================
  Coverage   90.54%   90.54%           
=======================================
  Files           1        1           
  Lines          74       74           
=======================================
  Hits           67       67           
  Misses          7        7

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