fzf#wrap([name string,] [opts dict,] [fullscreen boolean])

Fix #183

Close junegunn/fzf.vim#173 and #630

`termopen` no longer accepts a `name` option, instead we should suffix the
command with `;#NAME`.

Patch suggested by Mariusz Atamańczuk

Close #627

To make it consistent with the other commands in fzf.vim

Close #622

Close #620

Close #612

Close #583

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

Related: #559

Helps when your `$SHELL` is slow.

Close #552.

Fix https://github.com/junegunn/fzf.vim/issues/128

https://github.com/junegunn/fzf.vim/issues/114

Related: https://github.com/junegunn/gv.vim/issues/19

This fixes the problem where a new tab page is not closed when the
following configuration is used:

  let g:fzf_layout = { 'window': 'execute (tabpagenr()-1)."tabnew"' }

Fixes "E706: Variable type mismatch for: ret" when an exception is
caught.

e.g. Opening another buffer when `set nohidden`

https://github.com/junegunn/fzf.vim/issues/77

When 'dir' option is passed to fzf#run(), the current working directory
is temporarily changed to the given directory, and restored at the end.
However, this behavior is not compatible with &autochdir. This commit
introduces a heuristic to determine whether or not to restore the
previous working directory.

Related: https://github.com/junegunn/fzf.vim/issues/70

We should not restore the previous working directory if the current
directory has changed somehow. This can happen when &autochdir is set.

Close #469. `setlocal nospell` should appear before `setf fzf` to allow
customization of the option.

Close #451

The SwapExists dialog prevents multiple files from being opening if the
dialog occurs before all files are opened. Opening the files is more
important than showing the dialog, so choose "readonly" automatically
and continue opening files.

Related: https://github.com/junegunn/fzf.vim/issues/16

Related: #345