Add SPM support

[nawrasgeorgi]

[codecov-commenter]

Codecov Report

:exclamation: No coverage uploaded for pull request base (master@86645bc). Click here to learn what that means. The diff coverage is n/a.

@@            Coverage Diff            @@
##             master      #70   +/-   ##
=========================================
  Coverage          ?   92.03%           
=========================================
  Files             ?        2           
  Lines             ?      113           
  Branches          ?        0           
=========================================
  Hits              ?      104           
  Misses            ?        9           
  Partials          ?        0           

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