This release expands the set of test cases that Hypothesis saves in
its database for future runs to include a representative set of
"structurally different" test cases - e.g. it might try to save test
cases where a given list is empty or not.
Currently this is unlikely to have much user visible impact except to
produce slightly more consistent behaviour between consecutive runs of
a test suite. It is mostly groundwork for future improvements which
will exploit this functionality more effectively.
The canonical version of these notes (with links) is on readthedocs.