As M4v3R noted, what Vim does is not usually possible with just custom key bindings. If you're not familiar with it, I would highly recommend giving it a try; even as a beginner if you know only a few commands it'll still save you a ton of time. I find it hard to watch co-workers press arrow keys repeatedly or select text character by character when the same could be accomplished with one or two key presses.
You have two lines and want to swap them? ddp – that's it. 3 key presses. You have a string on the same line as your cursor and need to replace it? ci" – also 3 key presses (Change Inside "Quote).
No editor has configurable key bindings that can do this.
There are tons of tutorials online; this one seems to explain things pretty well: https://takac.github.io/2013/01/30/vim-grammar/
Vim support is more than just key bindings. The most powerful thing about Vim is that it’s modal, ie. you have several editing modes - insert, normal, replace, visual, all with their own set of commands.
Maybe this part will help:
"We have easily customizable key bindings"
I don't know if they can be customized to match Vim, but it might be too soon to write Nova off.