more reasonable Enter in replace mode

[Axlefublr]

I appreciate the thought of allowing the user to enter an actual newline
However, pressing ctrl+s I find to be quite cumbersome, considering that entering a newline is MUCH more rare in comparison to accepting a replacement

How about making Enter accept, but Alt+Enter to enter a newline?

I have already done this in my personal fork, so if you want me to PR it into here, please tell me (I don't like stale PRs, and there hasn't been much activity in a while)