Update react to the latest version 🚀

[greenkeeper]

There have been updates to the react monorepo:

• The dependency react was updated from 16.8.2 to 16.8.3.
• The dependency react-dom was updated from 16.8.2 to 16.8.3.

These versions are not covered by your current version range.

If you don’t accept this pull request, your project will work just like it did before. However, you might be missing out on a bunch of new features, fixes and/or performance improvements from the dependency update.

This monorepo update includes releases of one or more dependencies which all belong to the react group definition.

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Find out more about this release.

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Your Greenkeeper bot 🌴

[greenkeeper]

• The dependency react was updated from 16.8.2 to 16.8.3.
• The dependency react-dom was updated from 16.8.2 to 16.8.3.

Update to these versions instead 🚀

[codecov]

Codecov Report

Merging #1971 into master will increase coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1971      +/-   ##
==========================================
+ Coverage   92.12%   92.13%   +<.01%     
==========================================
  Files         188      188              
  Lines       10807    10807              
  Branches     1581     1581              
==========================================
+ Hits         9956     9957       +1     
+ Misses        851      850       -1

Impacted Files	Coverage Δ
lib/github-package.js	68.48% <0%> (+0.38%)	⬆️

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