do not pin @types/react

[foray1010]

this closes #104

[codecov-io]

Codecov Report

Merging #105 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master   #105   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           1      1           
  Lines          39     39           
  Branches        3      3           
=====================================
  Hits           39     39

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[mpeyper]

Thanks. I'll publish this when I get home.