Adding Matt Robenolt to CONTRIBUTORS
Multiprocessing: Randomize writes so that a single process does not get all tasks while there's more space in the pipe buffer
Adds missing attribute
Tests passing
Test for not filling multiproc write buffer
Set default accept content
flakes
AMQP backend must specify accept content
[optimization] Revoke now accepts list argument (and used by ResultSet.revoke)
Hostname should also be passed through safe_str
Merge branch 'mattrobenolt/patch-1'

Conflicts:
	CONTRIBUTORS.txt