Switch to use language server

[ChrisChinchilla]

Closed by #41

[jdkato]

Have you started work on this? If not, I'm interested in submitting a PR so that some of the new action-related features can get in.

[ChrisChinchilla]

@jdkato Yes I have a prototype working, but hit some issues with the language server and also needed to think about how some of the features the plugin adds on top will work, so while I may release a pre-release soon, it will be a little while yet before there's something I think people can use in production.

I'd say, if the PR isn't too much work "the old way". submit it, if it is, then leave it for now.

[jdkato]

I haven't started anything yet, so I'll hold off for now.