remove parallel dependency
Raise for non-existent injections.

If a non-existent injection is passed to worker_factory, raise
and exception instead of ignoring it.
Fix an issue with reused producers erroring.

Previously the returned messages queue was used upon RPC delivery
to check if the message arrived at the destination or not.  As
this was never cleared however, a reused producer on a different
queue will result in an incorrectly delivered error message.

Without this delivering a message to a missing queue will cause
the service to malfunction even on working queues.
implement __repr__ for WorkerContext and others
promote kombu_helpers out of legacy
return body body and message
let standalone proxy take a timeout kwarg
flakes
comments
sleep instead of using non-existent service
don't refer to 0.1 seconds as 'forever'
async timeouts apply to result wait
refactor rabbit_config
drop leftover comment
up pyrabbit version to 1.1.0, no need to replace / for 2F
Safer reprs
Alternative safe-repr and enhanced test
Update other reprs to use explicit string encoding
Fall back to repr if utf-8 encoding fails
Coverage and better impl for repr_safe_str