Allow several paths

[neongreen]

At least on macOS, the open command works fine with several paths and often does something useful. E.g. if you have VLC and you open several files at once, VLC will create a playlist.

[Byron]

I think that's a great idea! I propose implementing this with these(paths: impl IntoIterator…) to allow open::these(…) as sibling to open::that(…).