manually merged https://github.com/prolic/HumusAmqpModule/pull/23 into master
#22 No callback required
#22 PHPCS
humus-supervisor-module in require-dev
updated composer.json to suggest empi89/php-amqp-stubs
add triggers annotation to consumer class
add triggers annotation to rpc server class
some cleanup
producer, rpc server and client triggers events
some cleanup