This release is mostly focused on internal refactoring, but has some nice polishing and a few bug fixes.
New features:
Much more sensible reprs for strategies, especially ones that come from hypothesis.strategies. These should now have as reprs python code that would produce the same strategy.
lists() accepts a unique_by argument which forces the generated lists to be only contain elements unique according to some function key (which must return a hashable value).
Better error messages from flaky tests to help you debug things.
Mostly invisible implementation details that may result in finding new bugs in your code:
Sets and dictionary generation should now produce a better range of results.
floats with bounds now focus more on ‘critical values', trying to produce values at edge cases.
flatmap should now have better simplification for complicated cases, as well as generally being (I hope) more reliable.
Bug fixes:
You could not previously use assume() if you were using the forking executor (because the relevant exception wasn't pickleable).
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