expire, durable, message_ttl, prefetch, etc... need to be before subtopic in files... undocumented behaviour change.

[petersilva]

Since 3.0.56 if the following settings show up in a configuration file:

 'auto_delete', 'durable', 'expire', 'message_ttl', 'prefetch', \
+                    'qos', 'queueBind',  'exchangeDeclare' 

they need to be in the file above/before the "subtopic" command they are meant to apply to.
These values used to be global, but they aren't anymore.

In 3.0.56... if one of these settings is present in a file, but it occurs after the subtopic setting... then it isn't applied to the queue used for that subtopic. So 3.0.56 will declare queues differently form earlier versions, and some incompatibilities (where queues have mismatching settings depending on which version is declaring them, given the same configuration file.) will occur.