Refactor CI

[jbusecke]

• Switching CI to gh actions

[codecov]

Codecov Report

Merging #61 (c567d45) into master (91f36cb) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #61   +/-   ##
=======================================
  Coverage   62.94%   62.94%           
=======================================
  Files           6        6           
  Lines         564      564           
=======================================
  Hits          355      355           
  Misses        209      209           

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