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

Changes from pull request vyuldashev#94

default sleep_on_error value

change vendor of phpamqplib

using implemented $this->getQueue() instead of $this->queue->getName()

updated readme