Open in Sidebar Ver2.1 Released

New Features in Ver 2.1

・Features
　・Toolbar
　　The icon of this addon has been added to the toolbar. The sidebar can be displayed / reloaded quickly by pressing it.  You can remove this icon if you don't need it.
　・Options
　　Now you can fix the initial page of the sidebar. This is useful for websites that list so many links.
・Others
　・For Developers
　　Remove values that are not in use from English messages.json.
　　Remove values that are not in use from index.css.

https://addons.mozilla.org/en-US/firefox/addon/open_in_sidebar/
https://github.com/Soushi-Atsumi/Open-in-Sidebar