Log Message:
py-PyRTL: Update to 0.10.2

Changelog:
* Fix tox tests on Apple M1, aarch64.
* Fix another tox tests.
* Fix error message typo.
* Support newer graphviz to generate SVG.
* Fix constant propagation for synthesized blocks.
* Improve net_connections() function.
* Improve paths() function.
* Update documentation.