Support for Powershell in Windows?

[asaboor-gh]

On windows, xonsh seems to only support cmd. It would be much flexible if subprocess can be dispatched to powershell. Powershell is much more flexible and superior shell to consider.

[anki-code]

hi! Please read - https://github.com/anki-code/xonsh-cheatsheet/blob/main/README.md#three-most-frequent-things-that-newcomers-overlook