chore(package): update rollup to version 0.45.2

[arlac77]

No description provided.

[codecov-io]

Codecov Report

Merging #164 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #164   +/-   ##
=======================================
  Coverage   95.86%   95.86%           
=======================================
  Files          12       12           
  Lines         121      121           
=======================================
  Hits          116      116           
  Misses          5        5

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[coveralls]

Coverage remained the same at 95.868% when pulling d980bab on greenkeeper/rollup-0.45.2 into 6f62825 on master.

[coveralls]

Coverage remained the same at 95.868% when pulling d980bab on greenkeeper/rollup-0.45.2 into 6f62825 on master.