2.4.19 * [New APIs for other addons to observe moving of mouse pointer on tabs.](https://github.com/piroor/treestyletab/wiki/API-for-other-addons#when-the-pointer-is-moved-over-tabs) * Add ability to change text direction in the sidebar. * Add ability to change visibility of collapsed descendants in a tooltip on collapsed tree. * Tooltip on a tab will appear only when it is necessary for too long title. * Disable animation effect of the fake context menu and other menu-like UI, if animation effects in TST is disabled. * Handle keyboard operations around the fake context menu and fake confirmation dialog on `keydown`. This behavior is same to native UI. * Show confirmation dialog only once, when multiple tree are closed at a time. And it won't be shown by "Close Tabs to the Right" and "Close Other Tabs", because the action is already accepted by the user. * Show confirmation dialog in the content area of the current tab if possible, when multiple tabs are closed by keyboard shortcut command. * Apply "insert new child at first" configuration for tabs grouped for their pinned parent. * Allow to drop tab before the first tab, when there is no pinned tab. (regression on recent versions) * Detach moved tab from existing tree when it is moved by Ctrl-Shift-PageDown. (regression on recent versions) * Unexpected bumping of scroll position is disappeared, for most cases around focued tabs. * Don't re-focus to a dragged tab after it is dropped, to allow dragging of background tabs as is. (Inspired from codes by Lej77, thanks!) * Allow to cancel closing of middle-clicked tab via API. (Inspired from codes by Lej77, thanks!) * Mouseup and mouseup events on the sidebar are now handled as a pair with same button (by Lej77, thanks!) * Fade out tab labels instead of ellipsis (by Keith94m thanks!) * Update `de` locale (by sicherist, thanks!)