vim keybindings: `j` and `k` for navigation.

[lassepe]

Thank you for this awesome package! This is a real boost for a REPL workflow!

I was wondering whether it would be possible to add support for j and k to navigate up and down in the terminal menu in a vim-like-fashion. I didn't dive into the details of your code but I saw that you are using REPL.TerminalMenus. Thus, I'm not sure whether here is the right place to file the issue or whether it should be filed upstream.

[MichaelHatherly]

Thanks, glad you're liking it.

JuliaLang/julia#37940 is what you want. This already works out of the box in 1.7, but is very unlikely to be a backporting candidate. There's probably nothing that can be done about that unfortunately.