What shells are supported by sheldon?

[mothsarecool524]

E.g. bash, zsh, fish being the main three that most people use.
I know that fish has its own built-in plugin manager, fisher, but I can't help but wonder. :p

Putting this list towards the top of the README, or somewhere in the Table of Contents, would be nice for those looking to use sheldon for the first time.

[rossmacarthur]

Currently only bash and zsh have good support and fish is experimental.

In theory someone could use sheldon with any shell if you override the correct global options: https://sheldon.cli.rs/Configuration.html#global-options

I will add a task to add this to the documentation! #183

[xiaoxiangmoe]

@rossmacarthur Is there any way to make both zsh, bash and fish sheldon config works for single user?