Jabulba

I tried with the new [Connection.set_call_timeout()](https://docs.rs/oracle/0.3.3/oracle/struct.Connection.html#method.set_call_timeout) and it works nicely, thanks for the quick update! I think it would also be nice to be able to configure the [Connector](https://docs.rs/oracle/0.3.3/oracle/struct.Connector.html) with...

In my case it would be enough to just ignore the messages during the cooldown as one notification already sends me to the chat! But I see what you mean......