v0.19

  - This module is *no longer* considered experimental. It's been used
    in production at Booking.com for a long time now without much
    issue.

  - Several minor bugfixes like "use"-ing a module that might be used
    for exceptions, fixing some exception logic.

  - Try to deal with Redis clients that have gone away for whatever
    reason (likely due to errors) by resetting the Redis connection on
    errors.