Remove Consumer(cancel_on_failure)

It's too much hassle for redeclaring all of these exchanges, queues and binds upon a consumer being cancelled.

changed milestone to %2.0.0

added Needs Tests label

assigned to @henrietta

added Feature label

changed title from Add unit tests for Consumer(cancel_or_failure) to Remove Consumer(cancel_on_failure)

changed the description

mentioned in commit 63a04191

mentioned in merge request !8 (merged)

fixed by !8 (merged)

closed

mentioned in commit 652cb57d

mentioned in commit b9ce877f