Suggestion: Include Option to also Open Tabs at the End(Default)

[onguarde]

Hi!

The reason big, at times, you really want to break out of the "FIFO" structure; for example, when branching off to totally new and irrelevant task. Ideally, the whole structure should be easily seen in a tree form as in tree-style tab firefox extension. But since it doesn't seem to be possible here, adding a way to still "create" a new branch is still useful.

Thanks in advance!