Versioning

[fahrradflucht]

I always thought that the server kind of gets versioned by this line. But today I noticed that there are quite a few changes since this last got touched.

I think it would be good if we would find a way to version the server a little bit better. ATM it's kind of a mess that vscode-elixir, atom-elixir and alchemist.el all maintain local copies of the server and they diverge quite a bit.

I noticed this because there is this PR open on vscode-elixir and in an ideal world this would get merged here first with the editor packages updating cause of a version bump in this project.

[mat-mcloughlin]

+1 on this.

I'm back on vscode-elixir now and it would be nice to know when to upgrade the server