Bump redis-namespace from 1.5.3 to 1.6.0
Bump redis-namespace from 1.5.3 to 1.6.0

Bumps [redis-namespace](https://github.com/resque/redis-namespace) from 1.5.3 to 1.6.0.
- [Changelog](https://github.com/resque/redis-namespace/blob/master/CHANGELOG.md)
- [Commits](https://github.com/resque/redis-namespace/compare/v1.5.3...v1.6.0)
rdunlop/unicycling-registration,rdunlop/unicycling-registration,rdunlop/unicycling-registration,rdunlop/unicycling-registration