ALE Integration

[nathanmsmith]

ALE is a great plugin for showing linting errors. It also has an API exposed for providing diagnostics from other plugins or tools for it to display (see section 3.2, ale-lint-other-sources)

I've been playing around with integrating diagnostic-nvim with ALE through this API, and have gotten pretty promising results. Would this be a feature that you'd be interested in merging? I'm also happy to split this functionality out into a separate plugin, since ALE duplicates many of the features already provided by diagnostic-nvim.

I really like this features because with ale i can get eslint errors and with diagnostic-nvim the language aware errors
It would be amazing to merge those!

[nathanmsmith]

Hey everyone! Given the deprecation of this plugin (#73), I've created a new small plugin that works with the new integrated Neovim diagnostic APIs.