Mesop

What's Changed
* Add Angular Material Card component by richard-to in https://github.com/google/mesop/pull/1082
* Consistent type hints for Optional by Jemeljanov in https://github.com/google/mesop/pull/1087
* Fix typo in card component doc by richard-to in https://github.com/google/mesop/pull/1090
* Add expansion panel component. by richard-to in https://github.com/google/mesop/pull/1089
* fix card_header.py docstring & remove security announcement by wwwillchen in https://github.com/google/mesop/pull/1095
* Send experiment settings on initial page load by wwwillchen in https://github.com/google/mesop/pull/1093
* Fix clearing query params when navigating by wwwillchen in https://github.com/google/mesop/pull/1097
* Migrate print calls to logging by wwwillchen in https://github.com/google/mesop/pull/1083
* Runs onload handler for browser navigations (backwards and forwards) by wwwillchen in https://github.com/google/mesop/pull/1101
* Bump to v0.12.9 by wwwillchen in https://github.com/google/mesop/pull/1103

New Contributors
* Jemeljanov made their first contribution in https://github.com/google/mesop/pull/1087

**Full Changelog**: https://github.com/google/mesop/compare/v0.12.8...v0.12.9

What's Changed
* [Snyk] Security upgrade python from 3.10.14-bullseye to 3.10.15-bullseye by wwwillchen in https://github.com/google/mesop/pull/1047
* [Snyk] Security upgrade python from 3.10.14-bullseye to 3.10.15-bullseye by wwwillchen in https://github.com/google/mesop/pull/1046
* [Snyk] Security upgrade python from 3.10.14-bullseye to 3.10.15-bullseye by wwwillchen in https://github.com/google/mesop/pull/1043
* [Snyk] Security upgrade python from 3.10.14-bullseye to 3.10.15-bullseye by wwwillchen in https://github.com/google/mesop/pull/1049
* [Snyk] Security upgrade python from 3.10.14-bullseye to 3.10.15-bullseye by wwwillchen in https://github.com/google/mesop/pull/1050
* Switch from socket.io to vanilla websockets & fix state updates for websockets by wwwillchen in https://github.com/google/mesop/pull/1048
* Bump the pip group across 2 directories with 3 updates by dependabot in https://github.com/google/mesop/pull/1052
* Bump the npm_and_yarn group with 9 updates by dependabot in https://github.com/google/mesop/pull/1055
* Add option expose static folder by richard-to in https://github.com/google/mesop/pull/989
* Bump the pip group across 3 directories with 1 update by dependabot in https://github.com/google/mesop/pull/1058
* Bump the npm_and_yarn group with 5 updates by dependabot in https://github.com/google/mesop/pull/1059
* Allow custom favicons by richard-to in https://github.com/google/mesop/pull/1062
* Add additional parameters for SecurityPolicy: trusted types and worker src by wwwillchen in https://github.com/google/mesop/pull/1064
* Fix race condition in processing commands (navigate) by wwwillchen in https://github.com/google/mesop/pull/1065
* Fix component renderer: querying web component children by wwwillchen in https://github.com/google/mesop/pull/1066
* Bump to v0.12.8beta1 by wwwillchen in https://github.com/google/mesop/pull/1070
* Fix bug with single select value not showing. by richard-to in https://github.com/google/mesop/pull/1072
* Add content_button equivalent to uploader by richard-to in https://github.com/google/mesop/pull/1074
* Disable component diffing when MESOP_WEBSOCKETS_ENABLED by wwwillchen in https://github.com/google/mesop/pull/1075
* [Snyk] Security upgrade werkzeug from 2.2.3 to 3.0.6 by wwwillchen in https://github.com/google/mesop/pull/1069
* Bump the npm_and_yarn group with 2 updates by dependabot in https://github.com/google/mesop/pull/1063
* Move copy_current_request_context to ensure thread-safety by wwwillchen in https://github.com/google/mesop/pull/1076
* Bump send from 1.0.0 to 1.1.0 in the npm_and_yarn group by dependabot in https://github.com/google/mesop/pull/1077
* [Snyk] Security upgrade werkzeug from 2.2.3 to 3.0.6 by wwwillchen in https://github.com/google/mesop/pull/1078
* Add env var: MESOP_APP_BASE_PATH by wwwillchen in https://github.com/google/mesop/pull/1057
* Bump to 0.12.8 by wwwillchen in https://github.com/google/mesop/pull/1085


**Full Changelog**: https://github.com/google/mesop/compare/v0.12.7...v0.12.8

What's Changed
* Add step to check security dashboard on publishing by wwwillchen in https://github.com/google/mesop/pull/1022
* Turn (server) error box into a more standard dialog UI by wwwillchen in https://github.com/google/mesop/pull/1025
* Fix sidenav "escape" key bug by richard-to in https://github.com/google/mesop/pull/1024
* Fix bug where same file could not be reuploaded by richard-to in https://github.com/google/mesop/pull/1032
* Add basic websockets support by wwwillchen in https://github.com/google/mesop/pull/1027
* Fix array proto types for select.ts by wwwillchen in https://github.com/google/mesop/pull/1037
* Use OS specific path separator by kumaranvpl in https://github.com/google/mesop/pull/1038
* [Snyk] Security upgrade python from 3.10.14-bullseye to 3.12.7-bullseye by wwwillchen in https://github.com/google/mesop/pull/1040
* Fix server error dialog UI by wwwillchen in https://github.com/google/mesop/pull/1042
* Add proper concurrency support in websockets mode by wwwillchen in https://github.com/google/mesop/pull/1036
* Bump to v0.12.7 by wwwillchen in https://github.com/google/mesop/pull/1044

New Contributors
* kumaranvpl made their first contribution in https://github.com/google/mesop/pull/1038

**Full Changelog**: https://github.com/google/mesop/compare/v0.12.6...v0.12.7

What's Changed
* Updates demos to work with dark mode by richard-to in https://github.com/google/mesop/pull/988
* Set llmrewriter to use system theme by richard-to in https://github.com/google/mesop/pull/993
* Add date picker and date range picker components. by richard-to in https://github.com/google/mesop/pull/982
* Add CSS class support for box component by richard-to in https://github.com/google/mesop/pull/995
* Fix broken datepicker test by richard-to in https://github.com/google/mesop/pull/1001
* Add rxjs dep to date range picker by richard-to in https://github.com/google/mesop/pull/999
* Update grid table example to use dark mode theming by richard-to in https://github.com/google/mesop/pull/1000
* Add update page title command by richard-to in https://github.com/google/mesop/pull/1004
* Add X-Accel-Buffering header to SSE responses by richard-to in https://github.com/google/mesop/pull/1012
* Fix bug where multiple select values could not be initialized. by richard-to in https://github.com/google/mesop/pull/1013
* Button toggle by richard-to in https://github.com/google/mesop/pull/1014
* Fix typo in select component docstring (breaking mkdocs build) by richard-to in https://github.com/google/mesop/pull/1017
* Set theme settings in hot reload by wwwillchen in https://github.com/google/mesop/pull/1018
* Bump version to 0.12.6 by richard-to in https://github.com/google/mesop/pull/1020


**Full Changelog**: https://github.com/google/mesop/compare/v0.12.5...v0.12.6

What's Changed
* Update me.markdown to render on frontend + copy code by richard-to in https://github.com/google/mesop/pull/930
* Remove require_selection from autocomplete by richard-to in https://github.com/google/mesop/pull/947
* Set default value on autocomplete by richard-to in https://github.com/google/mesop/pull/949
* Add basic form examples. by richard-to in https://github.com/google/mesop/pull/962
* Switch to using localhost by wwwillchen in https://github.com/google/mesop/pull/968
* Support `MESOP_CONCURRENT_UPDATES_ENABLED` env var by wwwillchen in https://github.com/google/mesop/pull/868
* Add instructions for reporting a security issue by wwwillchen in https://github.com/google/mesop/pull/974
* Add security announcement to docs site by wwwillchen in https://github.com/google/mesop/pull/976
* Try to resolve state sessions race condition by richard-to in https://github.com/google/mesop/pull/977
* Upgrade playwright by wwwillchen in https://github.com/google/mesop/pull/985
* Support pydantic BaseModel classes in state by wwwillchen in https://github.com/google/mesop/pull/983
* Bump to v0.12.5 by wwwillchen in https://github.com/google/mesop/pull/986


**Full Changelog**: https://github.com/google/mesop/compare/v0.12.4...v0.12.5

Important security notice

Please upgrade to this version and re-deploy your Mesop apps as soon as you can because this fixes a [high vulnerability security issue](https://github.com/google/mesop/security/advisories/GHSA-pmv9-3xqp-8w42).

What's Changed
* Add docs for mounting Mesop app by wwwillchen in https://github.com/google/mesop/pull/892
* Run e2e tests in debug/editor mode (in addition to prod mode) by wwwillchen in https://github.com/google/mesop/pull/893
* Fix HTML demo by adding security policy by wwwillchen in https://github.com/google/mesop/pull/899
* Fix firebase auth example by wwwillchen in https://github.com/google/mesop/pull/898
* Add Fancy chat example by richard-to in https://github.com/google/mesop/pull/904
* Allow scroll_into_view to work for components rendered in the same tick by wwwillchen in https://github.com/google/mesop/pull/902
* Add allowed iframes to fancy chat by richard-to in https://github.com/google/mesop/pull/917
* Update some usages of scroll-to by richard-to in https://github.com/google/mesop/pull/915
* Fix cutoff content for history prompt list / code diff viewer by richard-to in https://github.com/google/mesop/pull/916
* Add is_target to Click event by richard-to in https://github.com/google/mesop/pull/913
* Add some goldens for writing chat UIs by richard-to in https://github.com/google/mesop/pull/919
* Add hotkey shortcuts for text areas by richard-to in https://github.com/google/mesop/pull/922
* Add additional benchmarks by wwwillchen in https://github.com/google/mesop/pull/924
* Add get_path_to_page_configs by richard-to in https://github.com/google/mesop/pull/928
* Add Multimodal Embeddings Retail Search to showcase by richard-to in https://github.com/google/mesop/pull/927
* Attempt to fix flaky test by richard-to in https://github.com/google/mesop/pull/931
* Various updates to AI Editor stuff by richard-to in https://github.com/google/mesop/pull/933
* Create MVP AI console by wwwillchen in https://github.com/google/mesop/pull/934
* Fix web component static file serving by wwwillchen in https://github.com/google/mesop/pull/942
* Bump to v0.12.4 by wwwillchen in https://github.com/google/mesop/pull/943


**Full Changelog**: https://github.com/google/mesop/compare/v0.12.3...v0.12.4