support for AMQP filter expressions (for RabbitMQ 4.1).

[Gsantomaggio]

Is your feature request related to a problem? Please describe.

support for AMQP filter expressions like java client (for RabbitMQ 4.1).

Describe the solution you'd like

support for AMQP filter expressions like java client (for RabbitMQ 4.1).

Describe alternatives you've considered

No response

Additional context

per conversation with @lukebakken

Internal discussion - https://chat.google.com/room/AAAAw3YpXGA/oIpFI3W8UeI/oIpFI3W8UeI?cls=10