Redis

* Added missing INCRBY method. Thanks Krzysztof Dorosz.
* SET now accepts the EX, PX, NX and XX options from Redis 2.6.12. These
options will generate errors if these options are used when connected
to a Redis server < 2.6.12. Thanks George Yoshida.

* Fixed a bug with BRPOPLPUSH and lists with empty strings.
* All empty except: clauses have been replaced to only catch Exception
subclasses. This prevents a KeyboardInterrupt from triggering exception
handlers. Thanks Lucian Branescu Mihaila.
* All exceptions that are the result of redis server errors now share a
command Exception subclass, ServerError. Thanks Matt Robenolt.
* Prevent DISCARD from being called if MULTI wasn't also called. Thanks
Pete Aykroyd.
* SREM now returns an integer indicating the number of items removed from
the set. Thanks <https://github.com/ronniekk>.
* Fixed a bug with BGSAVE and BGREWRITEAOF response callbacks with Python3.
Thanks Nathan Wan.
* Added CLIENT GETNAME and CLIENT SETNAME commands.
Thanks <https://github.com/bitterb>.
* It's now possible to use len() on a pipeline instance to determine the
number of commands that will be executed. Thanks Jon Parise.
* Fixed a bug in INFO's parse routine with floating point numbers. Thanks
Ali Onur Uyar.
* Fixed a bug with BITCOUNT to allow `start` and `end` to both be zero.
Thanks Tim Bart.
* The transaction() method now accepts a boolean keyword argument,
value_from_callable. By default, or if False is passes, the transaction()
method will return the value of the pipelines execution. Otherwise, it
will return whatever func() returns.
* Python3 compatibility fix ensuring we're not already bytes(). Thanks
Salimane Adjao Moustapha.
* Added PSETEX. Thanks YAMAMOTO Takashi.
* Added a BlockingConnectionPool to limit the number of connections that
can be created. Thanks James Arthur.
* SORT now accepts a `groups` option that if specified, will return
tuples of n-length, where n is the number of keys specified in the GET
argument. This allows for convenient row-based iteration. Thanks
Ionuț Arțăriși.

* Parse errors are now *always* raised on multi/exec pipelines, regardless
of the `raise_on_error` flag. See
<https://groups.google.com/forum/?hl=en&fromgroups=#!topic/redis-db/VUiEFT8U8U0>
for more info.

* Packaged tests with source code

* Added BITOP and BITCOUNT commands. Thanks Mark Tozzi.
* Added the TIME command. Thanks Jason Knight.
* Added support for LUA scripting. Thanks to Angus Peart, Drew Smathers,
Issac Kelly, Louis-Philippe Perron, Sean Bleier, Jeffrey Kaditz, and
Dvir Volk for various patches and contributions to this feature.
* Changed the default error handling in pipelines. By default, the first
error in a pipeline will now be raised. A new parameter to the
pipeline's execute, `raise_on_error`, can be set to False to keep the
old behavior of embeedding the exception instances in the result.
* Fixed a bug with pipelines where parse errors won't corrupt the
socket.
* Added the optional `number` argument to SRANDMEMBER for use with
Redis 2.6+ servers.
* Added PEXPIRE/PEXPIREAT/PTTL commands. Thanks Luper Rouch.
* Added INCRBYFLOAT/HINCRBYFLOAT commands. Thanks Nikita Uvarov.
* High precision floating point values won't lose their precision when
being sent to the Redis server. Thanks Jason Oster and Oleg Pudeyev.
* Added CLIENT LIST/CLIENT KILL commands

* `from_url` is now available as a classmethod on client classes. Thanks
Jon Parise for the patch.
* Fixed several encoding errors resulting from the Python 3.x support.