Changelog:
===========
- Fix may_ always returning false for internal transitions
- Pass investigated transition to EventData context in 'may' check
- Improve the handling of diagrams when working with parallel states,
especially when using the show_roi option
- Exception is not broad enough and does not catch asyncio.CancelledError or
KeyboardInterrupt; use BaseException instead
- '_anchor' suffix has been removed for (py)graphviz cluster node anchors
- local testing switched from tox to nox
- Remove surrounding whitespace from docstrings
- Add on_final to Machine and NestedState constructor and final to State.
Callbacks passed to on_final will be executed when a State with final=True is
entered or all children of a parallel state are final.
- Process exceptions with Machine.on_exception in may_ as well
- Improved handling of removing transitions for GraphMachine and HiearachicalMachine
- Better handling of unset styling in GraphMachine
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
