* build pyi files when building/publishing 3rd party
* fix typo in workflow
* add future annotation
* add tests to pass coverage check
* add more unit tests
* omit pyi_generator from test coverage
* change black from dev deps to direct deps
* remake all pyi
* format pyi if black is present, return as if otherwise
* fix requested changes
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Co-authored-by: Masen Furer <m_github@0x26.net>
* Expose preventDefault and stopPropagation for DOM events
All EventHandler, EventSpec, and EventChain can now carry these extra
"event_actions" that will be applied inside the frontend code when an event is
triggered from the DOM.
Fix#1621
Fix REF-675
* Test cases (and fixes) for "event_actions"
* form: from __future__ import annotations
for py38, py39 compat
* Revert overzealous merge conflict resolution
