Linter/Fixer

What? Basically https://github.com/dense-analysis/ale, but only linter and fixer. Other things are already implemented via lsp.

Why? Linting is a thing that runs almost constantly, especially when real time execution is enabled. I believe having it in lua would improve the performance.

Potential existing implementations:

• https://github.com/dense-analysis/ale
• https://github.com/neomake/neomake
• https://github.com/vim-syntastic/syntastic

Potential pitfalls: Migrating all linter/fixer implementations that exist in ale, from vimscript to lua. Guess it can be done slowly over time.

I'm not a lua developer, but I can definitely help on this.