Offer a newline feature before the cmd prompt

[displague]

Powerline prompts can run long. It is common for users to put the command prompt on the following line.

Unfamiliar with rust, I attempted to do this locally by modifying the cmd $ and # to \n$ and \n#. The result has unwanted background color in the prompt line. It's not clear to me how I should configure the background and foreground to avoid this.

Could a newline 'feature' be made available so that it can be toggled on install?