About this extension

Tree Style Tab addon https://addons.mozilla.org/firefox/addon/tree-style-tab/ is now a sidebar panel, so you cannot use other sidebar panels in parallel, e.g. bookmarks. (See also the bug 1328776 - Provide ability to show multiple sidebar contents parallelly) So TST 3.1.0 and later has the SubPanel API to embed arbitrary contents below tabs as a "subpanel" from other helper addons.

This addon is a clone of Firefox's bookmarks sidebar panel for TST's subpanel. Due to security reasons or limitations of WebExtensions API itself, there are some restrictions:

* Impossible to open non-regular URLs like `about:config`. (This is a restriction of WebExtensions API.)
* Impossible to drag anything from elsewhere to the bookmarks subpanel.
* Impossible to drag bookmarks from the bookmarks subpanel to TST's sidebar.
* Impossible to open native context menu on bookmarks, and extra context menu items added by bookmark related other addons are also unavailable. (This is a restriction of WebExtensions API.)
* All bookmarks are shown with same icon. (This is a restriction of WebExtensions API. See also: the bug 1315616 - Give extensions access to cached favicon URLs)

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Release notes for 1.0.7

Don't apply button-like appearance to twisties.

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