* 548: Update certify version to 2016.2.28 * 545: Safely handle deletion of non-zip eggs in rotate command.
20.8.1
Not secure
=======
* Issue 544: Fix issue with extra environment marker processing in WorkingSet due to refactor in v20.7.0.
20.8.0
Not secure
=======
* Issue 543: Re-release so that latest release doesn't cause déjà vu with distribute and setuptools 0.7 in older environments.
20.7.0
Not secure
=======
* Refactored extra environment marker processing in WorkingSet. * Issue 533: Fixed intermittent test failures. * Issue 536: In msvc9_support, trap additional exceptions that might occur when importing ``distutils.msvc9compiler`` in mingw environments. * Issue 537: Provide better context when package metadata fails to decode in UTF-8.
20.6.8
Not secure
=======
* Issue 523: Restored support for environment markers, now honoring 'extra' environment markers.
20.6.7
Not secure
=======
* Issue 523: Disabled support for environment markers introduced in v20.5.