* 2.2.2
    * Fixed a bug in ZREVRANK where retriving the rank of a value not in
      the zset would raise an error.
    * Fixed a bug in Connection.send where the errno import was getting
      overwritten by a local variable.
    * Fixed a bug in SLAVEOF when promoting an existing slave to a master.
    * Reverted change of download URL back to redis-VERSION.tar.gz. 2.2.1's
      change of this actually broke Pypi for Pip installs. Sorry!
* 2.2.1
    * Changed archive name to redis-py-VERSION.tar.gz to not conflict
      with the Redis server archive.
* 2.2.0
    * Implemented SLAVEOF
    * Implemented CONFIG as config_get and config_set
    * Implemented GETBIT/SETBIT
    * Implemented BRPOPLPUSH
    * Implemented STRLEN
    * Implemented PERSIST
    * Implemented SETRANGE