/cc @chrisjohnson

Close #1067
Close #1083

Close #1017

Removed outdated animated GIF.

See #944

Add PayPal donation button

Close #893

Thanks to @majkinetor. Close #869.

CTRL-R binding used to start with --no-sort to list the matched commands
in chronological order. However, it has been a constant source of
confusion. Let's enable it by default from now on. The sorted result
shouldn't be too confusing as we use --tiebreak=index.

Goes well with --height

Replace the "temp file" workaround with the "read" function: it's
simpler and faster.

Use proper escaping, remove the custom function.

The "file" widget uses last token as root for the "find" command.
This replaces the equivalent of '**' completion in bash/zsh.
The "$dir" non-expanded variable can be used in FZF_CTRL_T_COMMAND to
set the root.

Close #726

Close #711

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

Close #627

Close #596

Close #560, #561