[fix] re #53: add install exports

[biojppm]

fixes #53

[codecov]

Codecov Report

Merging #55 (c066116) into master (db40178) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #55   +/-   ##
=======================================
  Coverage   92.51%   92.51%           
=======================================
  Files          50       50           
  Lines        9825     9825           
=======================================
  Hits         9090     9090           
  Misses        735      735           

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