Fix sourcemaps being distributed

[derekjuber]

Bumping create-universal-package to latest 3.x version to remove source maps from being distributed.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@8e41b4a). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #203   +/-   ##
=========================================
  Coverage          ?   98.38%           
=========================================
  Files             ?        5           
  Lines             ?       62           
  Branches          ?       12           
=========================================
  Hits              ?       61           
  Misses            ?        0           
  Partials          ?        1

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[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@8e41b4a). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #203   +/-   ##
=========================================
  Coverage          ?   98.38%           
=========================================
  Files             ?        5           
  Lines             ?       62           
  Branches          ?       12           
=========================================
  Hits              ?       61           
  Misses            ?        0           
  Partials          ?        1

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 8e41b4a...ca2a3f8. Read the comment docs.