merge from arlac77/npm-package-template-esm-only

[arlac77]

README.md

• docs(README): update from template

[coveralls]

Coverage remained the same at 48.387% when pulling ac33983 on npm-template-sync/1 into 4257852 on master.

[codecov]

Codecov Report

Merging #467 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #467   +/-   ##
=======================================
  Coverage   43.52%   43.52%           
=======================================
  Files           2        2           
  Lines         340      340           
  Branches       25       25           
=======================================
  Hits          148      148           
  Misses        192      192

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