It's important to note that this is a development release, something that's not immediately apparent from the linked page. This does not replace or obsolete 1.

It's important to note that this is a development release, something that's not immediately apparent from the linked page. This does not replace or obsolete 1.2.0 that came out last month and it is not intended for production use. Rather, it's the first release of the new development branch that parallels 1.2.0 and will hopefully see WebSocket support added as a feature soon.