Can we get more attention in the threaded client interface?

[jmrbcu]

Reading past issues and using it myself, I realized that the threading implementation can get more love. Not all of us want to use asyncio or mix asyncio code with threaded code. There are missing features (no ping intervals, no automatic reconnection, etc) in this implementation and some weird behavior.

[aaugustin]

It's quite new and hasn't received as much real-world usage as the legacy implementation.

Maybe I'll bring it to feature parity eventually. At this time, I'm prioritizing #1332.