plotly/dash v2.6.0 on GitHub

#2109 Add maxHeight to Dropdown options menu.
#2039 Long callback changes:
- Add background=False to dash.callback to use instead of app.long_callback.
- Add previous app.long_callback arguments to dash.callback (interval, running, cancel, progress, progress_default, cache_args_to_ignore, manager)
#2110 Add search prop to dcc.Dropdown options, allowing to search the dropdown options with something other than the label or value.

#2126 Fix bug where it was not possible to redirect from root when using pages.
#2114 Fix bug #1978 where text could not be copied from cells in tables with cell_selectable=False.
#2102 Fix bug as reported in dash-labs #113 where files starting with . were not excluded when building dash.page_registry.
#2100 Fixes bug where module name in for a custom not_found_404 page is incorrect in the dash.page_registry when not using the pages folder.
#2098 Accept HTTP code 400 as well as 401 for JWT expiry
#2097 Fix bug #2095 with TypeScript compiler and React.FC empty valueDeclaration error & support empty props components.
#2104 Fix bug #2099 with Dropdown clearing search value when a value is selected.
#2039 Fix bugs in long callbacks:
- Fix #1769 and #1852 short interval makes job run in loop.
- Fix #1974 returning no_update or raising PreventUpdate not supported with celery.
- Fix use of the callback context in celery long callbacks.
- Fix support of pattern matching for long callbacks.
#2110 Fix dcc.Dropdown search with component as prop for option label.
#2131 Add encoding to file open calls. Fix bug #2127.

Changed

#2116 Rename long callbacks to background callbacks
- Deprecated dash.long_callback.managers.CeleryLongCallbackManager, use dash.CeleryManager instead.
- Deprecated dash.long_callback.managers.DiskcacheLongCallbackManager, use dash.DiskcacheManager instead.
- Deprecated dash constructor argument long_callback_manager in favor of background_callback_manager.