WsServer refactor (#174)

* Re-apply changes

* Fixed tests

* 3 to go

* Passing tests!

* Fix formatting

* Fix formatting in tests

* Fixed examples

* Bind listener when server starts

* Formatting, disable deadlock test to check CI

* Fixed deadlock test

* Fix benches

* Remove dead code

* Restoring unit tests

* Restored all unit tests

* Missing unwraps

Co-authored-by: Niklas Adolfsson <[email protected]>

* Missing unwraps

Co-authored-by: Niklas Adolfsson <[email protected]>

* Typo :)

Co-authored-by: Niklas Adolfsson <[email protected]>

* Remove broken connections from subscriptions

* Tweak tests

* Add some doc comments

Co-authored-by: Niklas Adolfsson <[email protected]>