* Implement websocket server.
* Implement websocket client.
* Run nimpretty.
* Remove commented code.
* Address comments.
* Address comments on websocket server.
* Use seq[byte] to store data.
* Working bytes conversion.
* Remove result from return
* Refactor the code.
* Minor change.
* Add test.
* Add websocket test and fix closing handshake.
* Add MsgReader to read data in external buffer.
