Operations with tabs

[Raphango]

Firstly, thanks y'all for this brilliant browser. I've been using it for about two or three weeks, and I am enjoying it very much! I have just a few suggestion for further improvements:

1. Add the possibility of "dragging off" a tab for creating a new window.
2. Add the possibility of selecting two diferent tabs, to put them side by side, just like is possible with SublimeText.
3. Add the possibility to pin tabs.
4. Add a "Reopen tab" function.

Thank you very much!