Fix for deprecated `insertmode` option in Neovim
Fix for deprecated `insertmode` option in Neovim

This is just the minimal fix, there may be other side-effects. But I
actually think this might make things easier, as it looks like this
cleans up Insert mode into a cleaner abstraction. Perhaps now we
will stay in Insert mode longer, without randomly being dropped into
Normal mode by presumptive plugins.

Neovim PR here: https://github.com/neovim/neovim/pull/18547

tombh/novim-mode