Added
- Rofi support with `pydymenu.rofi()`
- Added preview support for `fzf` with `pydymenu.fzf(options, preview="figlet
{}")`
Changed
- No longer return `str` when `multi=False`. Instead, I always return a list of
strings. When multi select is disallowed the `len(return_val) == 1 and
type(return_val) is list`