Textualize/textual v0.28.0 on GitHub

[0.28.0] - 2023-06-19

The devtools console now confirms when CSS files have been successfully loaded after a previous error #2716
Class variable CSS to screens #2137
Class variable CSS_PATH to screens #2137
Added cursor_foreground_priority and cursor_background_priority to DataTable #2736
Added Region.center
Added center parameter to Widget.scroll_to_region
Added origin_visible parameter to Widget.scroll_to_region
Added origin_visible parameter to Widget.scroll_to_center
Added TabbedContent.tab_count #2751
Added TabbedContent.add_pane #2751
Added TabbedContent.remove_pane #2751
Added TabbedContent.clear_panes #2751
Added TabbedContent.Cleared #2751

Fixed setting TreeNode.label on an existing Tree node not immediately refreshing #2713
Correctly implement __eq__ protocol in DataTable #2705
Fixed exceptions in Pilot tests being silently ignored #2754
Fixed issue where internal data of OptionList could be invalid for short window after clear_options #2754
Fixed Tooltip causing a query_one on a lone Static to fail #2723
Nested widgets wouldn't lose focus when parent is disabled #2772
Fixed the Tabs Underline highlight getting "lost" in some extreme situations #2751

Breaking change: The @on decorator will now match a message class and any child classes #2746
Breaking change: Styles update to checkbox, radiobutton, OptionList, Select, SelectionList, Switch #2777
Tabs.add_tab is now optionally awaitable #2778
Tabs.add_tab now takes before and after arguments to position a new tab #2778
Tabs.remove_tab is now optionally awaitable #2778
Breaking change: Tabs.clear has been changed from returning self to being optionally awaitable #2778