Version 2.2.3
Bug Fixes:
* Use custom fake file type for testing fileno behaviour.
This works around an incompatibility in Python 2.7 file type that
caused test cases to fail.
Changes:
* Promote the warning for runner module to a DeprecationWarning.
This has been an unofficial example module from the beginning, and
it will be removed in a future version.
Version 2.2.2
Bug Fixes:
* Remove from the build system specification a white space character
not permitted in TOML format.
Additions:
* Implement test suite automation in virtualenvs, using Tox.
Version 2.2.1
Additions:
* Add a :PEP:518 conformant build system specification (the
pyproject.toml file).
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