Update RabbitMQQueue.php

Update RabbitMQQueue.php

Merge pull request #1 from beerkeeper/test

Added 5.4 changes to 5.5

Added for every queue priority support

Default max priority set to 5

Added option for passthrough of parameters like priority

Merge remote-tracking branch 'origin/master' into v5.5

Merge pull request vyuldashev#131 from vladimir-yuldashev/analysis-z3…

…pPgG

Apply fixes from StyleCI

Merge pull request vyuldashev#127 from AaronJan/patch-1

[5.4] implement `size()` method

Merge pull request vyuldashev#116 from vladimir-yuldashev/analysis-8K…

…rGB6

Apply fixes from StyleCI