Update redis to 3.1.0

[pyup-bot]

This PR updates redis from 3.0.1 to 3.1.0.

Changelog

3.1.0

* Connection URLs must have one of the following schemes:
   redis://, rediss://, unix://. Thanks jdupl123. 961/969
 * Fixed an issue with retry_on_timeout logic that caused some TimeoutErrors
   to be retried. Thanks Aaron Yang. 1022/1023
 * Added support for SNI for SSL. Thanks oridistor and Roey Prat. 1087
 * Fixed ConnectionPool repr for pools with no connections. Thanks
   Cody Scott. 1043/995
 * Fixed GEOHASH to return a None value when specifying a place that
   doesn't exist on the server. Thanks guybe7. 1126
 * Fixed XREADGROUP to return an empty dictionary for messages that
   have been deleted but still exist in the unacknowledged queue. Thanks
   xeizmendi. 1116
 * Added an owned method to Lock objects. owned returns a boolean
   indicating whether the current lock instance still owns the lock.
   Thanks Dave Johansen. 1112
 * Allow lock.acquire() to accept an optional token argument. If
   provided, the token argument is used as the unique value used to claim
   the lock. Thankd Dave Johansen. 1112
 * Added a reacquire method to Lock objects. reaquire attempts to renew
   the lock such that the timeout is extended to the same value that the
   lock was initially acquired with. Thanks Ihor Kalnytskyi. 1014
 * Stream names found within XREAD and XREADGROUP responses now properly
   respect the decode_responses flag.
 * XPENDING_RANGE now requires the user the specify the min, max and
   count arguments. Newer versions of Redis prevent ount from being
   infinite so it's left to the user to specify these values explicitly.
 * ZADD now returns None when xx=True and incr=True and an element
   is specified that doesn't exist in the sorted set. This matches
   what the server returns in this case. 1084
 * Added client_kill_filter that accepts various filters to identify
   and kill clients. Thanks Theofanis Despoudis. 1098
 * Fixed a race condition that occurred when unsubscribing and
   resubscribing to the same channel or pattern in rapid succession.
   Thanks Marcin Raczyński. 764
 * Added a LockNotOwnedError that is raised when trying to extend or
   release a lock that is no longer owned. This is a subclass of LockError
   so previous code should continue to work as expected. Thanks Joshua
   Harlow. 1095
 * Fixed a bug in GEORADIUS that forced decoding of places without
   respecting the decode_responses option. Thanks Bo Bayles. 1082

Links

• PyPI: https://pypi.org/project/redis
• Changelog: https://pyup.io/changelogs/redis/
• Repo: https://github.com/andymccurdy/redis-py