First, thank you and congratulations for your add-on. It is very lightweight and works perfectly.

Second, please a request:
When I choose "Open all links in tabs", I do mean that, and I want "all" to be opened in new tabs. However, in your add-on some links in some pages are opened in same tab. An example is facebook, where some links open in new tab, while other links (notifications, messages, friends requests etc) are opening in same tab.
For many years I used (https://addons.mozilla.org/en-US/firefox/addon/open-link-in-new-tab/). It is a perfect example/model where the option "Open all links in tabs" really means it.
Please, I would love if you can improve your add-on with my request. I will be happy to donate for this.

Thank you!