Quorum mechanism support

[Vovchikus]

Does this library supports RMQ version 3.12 and Quorum mechanism of queues (also with lazy queues and retries during replication)?

[lukebakken]

Does this library supports RMQ version 3.12

Yes

and Quorum mechanism of queues

Yes, you must declare your queues using the x-queue-type: quorum argument - https://www.rabbitmq.com/quorum-queues.html

also with lazy queues and retries during replication

I'm not quite sure what you're asking here.