Passed in event loop is not always respected

[balloob]

The broker allows an event loop to be passed in but this currently raises an error. From a quick search I found two places that need to be made aware of the to be used event loop:

• Session.__init__()
• Broker.__init__()

[njouanin]

Hi,
Could you have a try with the commit I've just pushed to the develop branch ?

[balloob]

Did a quick test and this seems to work. Thanks!