Fix unsafe concurrent WaitGroup use
Let's not jump to conclusions in log messages
Use defer for unlocking and comment wg.Add
Merge pull request #77 from lytics/fix-wg-race

Fix wg race
Metafora was marking tasks as Done on Shutdown, now let Run decide

Also drop error return value as there was nothign for Metafora to do with it.
Retry koalemosd tasks on etcd failures
Merge pull request #78 from lytics/fix-run-exiting

Metafora was marking tasks as Done on Shutdown, now let Run decide
Export Consumer.Frozen and add http introspection handler
Merge pull request #79 from lytics/export-frozen

Export Consumer.Frozen and add http introspection handler
Add a balancer which sleeps len(tasks)*30ms before claiming
Minor doc cleanups
Merge pull request #81 from lytics/sleepy-balancer

Add a balancer which sleeps len(tasks)*30ms before claiming
Merge branch 'master' of https://github.com/lytics/metafora into selectables