Upgrading from 1.0.4: There are no backward incompatible changes.
- #156 - consumer: prevent data race on RNG
- #155 - config: support
flag.Value interface
- #147/#150 - consumer: fix application of
max_backoff_duration (thanks @judwhite)
- #138 - fix lint, vet, fmt issues
- #137 - remove
go-simplejson dependency
