Swallow (and attempt to retry) Redis timeout errors when updating stats. This is so code which calls #stats does not conflate job failures with stats failures.
Retry all exceptions.
Update comment.
Update comment.
Sleep before retrying.
Adds a changelog entry.
Merge pull request #1511 from mperham/feature/redis-stats-protection

Swallow (and attempt to retry) Redis timeout errors when updating stats....