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Added
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* Python 3.10 and 3.11 are now supported.
Changed
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* Improved performance of checking for already built packages.
Removed
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* Dropped support for running tests via `setup.py test`.
The mechanism is considered deprecated by upstream and removing it allows us to drop a dependency.
* Python 3.6 is no longer supported. It likely still works but we will no longer run CI against it.