Provides :ZoomIn and :ZoomOut commands.
I use neovide. It's great, but I want to be able to zoom in and out like in my terminal.
Install with a plugin manager.
Define a guifont, and map your keys. My config:
set guifont=DejaVuSansMono\ Nerd\ Font:h16
nmap <c-+> :ZoomIn<CR>
nmap <c--> :ZoomOut<CR>