* Emit warnings after off is called
If a handler has been registered, and then gets unregistered, the key/methodname still exists in the map and signalr does not warn about a missing handler. Might be by design, but I like it this way.
* Build cjs, esm and umd versions
* Split MsgPack into separate module
* Split package.jsons up so they can stay clean
* Move common dev dependencies to a root package.json
Olof Dahlbom
Mikael Mengistu
BrennanConroy
Andrew Stanton-Nurse