fuzzy-tmux selection + multiple deletes

[rrevanth]

Hi,

I forked the repo and added some of my own implementations.

1 ) The completions are not working in my zsh shell. So I added one completion command.
Need to add the completion command to .zshrc so that it will work
2 ) if jump is entered without any args, it will open up a fuzzy selection window where it will show all bookmarks and you can enter directly to them.
3 ) When deletemarks is entered without any arg, it shows the fuzzy window, where Ctrl+T will toggle selection on each line or you can enter on the line for single selection to delete.

For 2 & 3 , fzf is needed - https://github.com/junegunn/fzf.

[jocelynmallon]

Thanks for sending these, fzf is new to me, so give me a few days to test it out and look through the code changes.