qicharts2 0.2.1
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* Fix x axis error when dates crosses summer/winter time.

qicharts2 0.2.0
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* Import dplyr >= 0.7.0
* Fix calculation of control limits for xbar chart in qic() with freeze or 
  exclude argument.
* C chart ignores agg.fun argument.

qicharts2 0.1.1
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* First release.