0.5.1 / 2016-06-12
==================

  * fix: should check process.env
  * fix: can't redefine process.env when node<4

0.5.0 / 2016-06-11
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  * feat: add isMocked method to check if the member of the object is mocked

0.4.0 / 2015-09-17
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  * Support mocking accessor descriptor