The last release with good ol lang server

The master branch will lack lang server for some time.

When we'll refactor the code to use less global state, it should be easier to write a better language server that is more modular and does not go into the linter internals.

Right now it makes it very hard to change the code.

If you need a language server, this release is for you.
When it will be a time for the next release, maybe we'll get an alternative ready.