https://github.com/junegunn/fzf.vim/issues/147

Take SSH completion hints from known_hosts

Signed-off-by: Junegunn Choi <junegunn.c@gmail.com>

[fzf-tmux] Change tmux pane title for fzf splits

Close #580

Also extend default jump labels

Related: #555

jump and jump-accept implement EasyMotion-like movement in fzf.
Suggested by @mhrebenyuk. Close #569.

Close #571

Should wait until execute action completes

The width of the pseudo-terminal on Travis CI environment can be small
and cause the line to be wrapped.

Close #570

Close #560, #561

Related: #559

Fix missing reference to UNAME_M

The `Build on $(UNAME_M) is not supported, yet` message was referencing an undefined UNAME_M. Fixed that.

Helps when your `$SHELL` is slow.

Close #552.

e.g. Remapping fzf-file-widget to CTRL-X CTRL-T intead of CTRL-T

    bind -x '"\C-x\C-t": fzf-file-widget'
    bind '"\C-t": transpose-chars'

- fzf-file-widget
- fzf-history-widget
- fzf-cd-widget

Related: 23244bb4