Add `-h` switch to reverse `-B` switch

[martin-braun]

The default ls -l will always show sizes in bytes (i.e. like exa -Bl), so my alias is ls="exa --bytes.

When I then decide to show the file sizes in human readable form using ls -hl I will toggle the header instead.

It would've been nice to preserve the -h flag. This is pure muscle memory here. exa is not installed everywhere.

Thoughts?

[eggbean]

I had that problem with the -A switch, as I always type ls -lA, so I wrote this wrapper script to have most of the same switches as ls. Just alias to it and you'll be able to use exa like ls.

https://gist.github.com/eggbean/74db77c4f6404dd1f975bd6f048b86f8

[martin-braun]

@eggbean Very nice contribution, thank you. :)