Revert "Try socket.io", performance dropped

This reverts commit 6bc6b1f286f0b688dcfdba1819c067b579edc84c.
Revert "WIP Better WebSocket library with old and new protocol support"

This reverts commit ed76869ec1e50d509da223d50071e6f6838d4bd6.
Fix prepublish being run for `npm install`
Use 2-space indentation for package.json

Also remove empty lines.

This facilitates diffs with automatic manipulation of this file.
Try engine.io
Revert "Try engine.io", performance dropped

This reverts commit db946af3da6a82f730d197c30816e1d65ec38866.
Use `ws` efficient and compatible
Don't write int to process.env, as it converts back to string