Add merge bookmarks in addition to save/restore #148
This is really a duplicate of #147 but that was a little specific and wasn't framed as a feature request.
It should be possible to add the functionality on the Settings menu, either a new button or a checkbox  Merge restored bookmarks above (Restore).
I'm finding this desirable as I start to try to use XB more in different contexts/environments with different browsers. As the original poster.