Tree Style Tab 4.0.13 FireFox

Apply new-tab-command-tab behavior correctly. (regression on 4.0.12)
Use GrayText instead of ButtonText as the tabs border color in the "High Contrast" theme, to reduce stresses from too high contrast.
"Move Tab" => "Move to New Window" in the context menu on the sidebar now moves whole tree always.
"Move Tab" => "Move to New Window" opens a new window shifted from the source window a little.
Don't deactivate unrelated options even if <all_urls> permission is not granted.
Fix unexpected reloading of the sidebar panel on tab attaching/detaching.
Add a new secret option syncActiveStateToBundledTabs to suppress expanding of the tree and scrolling to it for group tabs bundled to a pinned tab, when the pinned tab become active.

Tabs containing sticky tabs are kept expanded when another tree is expanded, even if those tabs are sticked via API.

Drop support of Firefox older than 115.
Restructure options about new tab position control, to reduce overlapped effects of multiple options. Now you can choose "open tab as a first/last child" for each option directly.
Expose expert options to control behavior of new tabs opened from links and the "New Tab" command in the simulated tab context menu.
Use on-memory storage for the cache of sidebar contents, to prevent broating of Firefox's session file. This means that inititalization on the browser startup takes more time, and you can take the old behavior back by a new advanced option.
Guess tabs opened by the "New Tab" command more certainly.
Suppress too much RAM usage problem with some themes with animations. (See also the bug 1875100.)
Store device ID more safely for the simulated Sync feature.
Update zh_CN locale by NightSharp. Thanks!

Handle tabs internally moved by TST itself more correctly. Reduced wrong placements of tabs opened from a pinned parent on some situations.
Optimize initialization process of the tab context menu on the sidebar page. Reduced delayed update of menu items after the menu appears on the screen.
Reduced visual gap between the last tab and the new tab button in a scrollable tab bar with the Proton theme.
Successfully detach a tab to a new window when a tab is dragged, moved to streight left or right and dropped at undroppable location, more certainly. The operation was unexpectedly blocked by a workaround for an old issue already fixed at Firefox 71.
Treat dropped multiselected tabs from Firefox's native tab bar as dropped tree items.
Update link to the list of known helper addons: now it is an wiki page.
Introduce a workaround for a platform specific problem: unexpected reaction for drag events is triggered after a finished drag-and-drop actions.
API: Add new notification type try-collapse-tree-from-collapse-command and try-collapse-tree-from-collapse-all-command to allow blocing of collaption of tree by commands.
Updated style definition of tree twisties: now their positioning can be customized with margin and padding more easily.
Uniform to label the feature to apply custom user style definitions as "User Style Sheet".
Update ru locale by wvxwxvw. Thanks!

Update de locale by SammysHP.

Use the name of the parent "group tab" as the default folder name for the "Bookmark This Tree" command, if possible.
Detect tabs as opened from bookmarks correctly on Firefox 105 and later.
Never load pending tabs after they are moved across windows more certainly.

Fix hanging after a tree is moved across windows via drag and drop. (regression on 3.9.0)
Keep tabs shifted when the mouse cursor moves onto the scrollbar.
Becomes more safe for invalid value of distance to shift tabs for auto-shown scrollbar.

Windows for tabs detached from an existing window inherits the size and state ("maximized" or "fullscreen") from the source window like Firefox does.
Reduce some edge case problems (like infinite loop, stop working, and so on) around re-layouting and synchronization of the sidebar contents.
Update indent level and parent information correctly for descendant tabs orphaned by tab detaching via any operation ouside of TST.
Imitate tab focus behavior about Firefox's browser.tabs.insertRelatedAfterCurrent and browser.tabs.selectOwnerOnClose more correctly.
Never load pending tabs after they are moved across windows.
Fix unexpected fail of drag-and-drop of selected multiple trees after drag-and-drop across windows.
Open about:reader URL bookmarks with their original URL (because addons cannot open about:reader URLs.)
Always expose the "Manage Devices..." item under the "Send Tree to Device" menu in the tab context menu, if it is running on Fennec.
Brush up wording of "other tabs" in Japanese locale.
Reset configs more safely with the "Reset" in the options page.
Change the method to keep space to show auto-hidden scrollbar: using margin instead of padding in tab-item-substance.
Never change coloring of auto-hidden scroll bar.
Reintroduce support for @import rule in user styles.
Totally reconstruct API to insert extra contents to TST's sidebar area. Now we can insert arbitrary UI element above/below all tabs, and track events about keyboard input and focus.
Respond to a get-tree request more certainly even if it is requested with a Tab.id and from a tabs.onCreated listener.
Add a new log module sidebar/tst-api-frontend.
Update zh_CN locale by NightSharp. Thanks!

Fix odd behaviors around drag operations on Firefox 97 and later.
Inherit container from the active tab to new tabs more safely by reopening, without losing their URL.
Accept double quotations in tab titles for a bookmark title.
Don't expand tree by long-press of the Ctrl key, when Ctrl-Tab handling is not granted.
Show "gear" favicon for "about:config" tabs (follow-up of a change on Firefox 98).
Update de locale by SammysHP. Thanks!

Применять заданные цвета к значку кнопки панели инструментов, значкам меню и значку заголовка боковой панели, если тема предоставляет богатую информацию (например, Colorways of Firefox 95 и более поздних версий).

Исправление неожиданно невидимых дочерних вкладок при восстановлении родительской вкладки и повторном присоединении свернутых вкладок к восстановленной родительской вкладке.
Корректное аутдентирование вкладки через API, когда дочерняя вкладка аутдентируется на корневой уровень вместе со своими потомками.
Обновление zh_CN с помощью NightSharp. Спасибо!

Breaking change around DOM structure of tabs:
Each tab now has tab-item-substance as a mid-level container between tab-item and tab content elements like tab-favicon. If you use any custom user styles, > (child combinator) after tab-item in selectors need to be removed.
Open bookmarks including about:newtab correctly.
Init list of external addons for permissions correctly.
Reduce annoying errors in the error console.
API improvement: introduce a new place indent to insert extra tab contents.
API improvement: introduce parent, parent-of-<id>, root and root-of-<id> keywords to get tabs based on tree structures.

Add a theme like Proton experimentally. Proton is the next UI theme of Firefox itself.
Rename the theme "Plain" to "Photon". Photon is the current UI theme of Firefox itself.
Restructure tab context menu items to match to the one on Nightly 89.0a1.
Add a new expert option to close a parent tab as a solo tab by triggers outside of TST, even if it has collapsed children, with visible sidebar.
Increase the maximum size of the user styles about 12KB.
Add a debug option to configure the delay to detect duplicated tabs.
API improvement: introduce create which creates a new tab bypassing TST's tab position control behaviors.

Prevent the cached helper addon IDs to be synchronized via Firefox Sync. This should solve problems around initialization of helper addons after TST is updated dynamically.
Don't apply "Tabs from any other trigger" option for new tabs opened from TST's new tab button and the new tab action menu.
Show tab drag feedback images at bottom-right of the cursor like Firefox does, for better visibility of drop targets.
Update ru locale by wvxwxvw. Thanks!

Limit maximum rows of pinned tabs (50% height of the sidebar by default) and allow to scroll pinned tab rows with the wheel.
Keep tree structure more robustly for tabs immediately closed and reopened with different contaienr by any other addon.
Don't restore closed tabs doubledly on a restoration with Ctrl-Shift-T.
Restore root level tabs to their original position correctly, even if "new tabs from any other trigger" option is changed. (regression on recent versions)
Clean up only dummy group tabs even if "Close descendants too" is chosen for options under the "When a parent tab is closed or moved just as a solo tab" => "Custom" section.
Apply "When a parent tab is closed or moved just as a solo tab" => "Recommended behavior for people who still use the native tab bar of Firefox itself also" => "Replace closed parent with a dummy tab and keep the tree" behavior correctly. (regression on recent versions)
Show confirmation for closing descendants when a collapsed tree is closed via keyboard shortcuts. (regression on recent versions)
Move detached descendants after all other existing descendants automatically, to keep correct tree structure. (regression on recent versions)
Add an expert option to change acceptable accelerator key to match the one on Firefox itself modified via ui.key.accelKey.

Consistent the position of the new tab action selector button in both regular and private windows.
Update ru locale by wvxwxvw. Thanks1