Release 0.5.0

Author: lsbardel

docs/history/0.5.md

@@ -4,8 +4,9 @@ Backward incompatible release with a considerable amount of internal and API ref
 
 * Ability to add additional consumers to the queue server (see [pulsar-twitter](https://github.com/quantmind/pulsar-twitter) for example)
 * Each consumer is an attribute of the server queue api and backend objects
-* Renamed TaskFuture to MessageFuture
-* Handle max_retries with retry_delay
-* TaskError can be used in order to avoid a full stack trace dump. It means it is a TaskError handled by the Job callable.
-* Added timeout to task execution
-* Max concurrent_tasks a linear function of number of cores
+* Renamed ``TaskFuture`` to ``MessageFuture``
+* Handle ``max_retries`` with ``retry_delay``
+* ``TaskError`` can be used in order to avoid a full stack trace dump. It means it is a TaskError handled by the Job callable.
+* Added ``timeout`` to task execution
+* Max concurrent tasks is a linear function of number of cores and ``concurrent_tasks`` parameter
+