Bump version number.
Merge branch 'hotfix/2.7.2.1.1' into develop

Conflicts:
	setup.py
Merge branch 'master' of github.com:locationlabs/mockredis into feature/AddMissingListMethods
added rpop and lpush
- llen added to redis.py
- tests for list operations llen, lpop, lpush, rpop and rpush added
clean up as per feedback on SYS-62
Type check added for list
get functions for list and zset generalized
corrected error message on type function
minor changes
Use str() for saved values in HMSET, RPUSH, and ZINCRBY
Don't catch RedisError until we've successfully imported redis-py.

This allows the tests to run without error if redis-py is not installed.
Document correct patch targets.
replaced returnDefault with return_default
Merge branch 'feature/AddMissingListMethods' into develop

Conflicts:
	mockredis/redis.py
clean-up code merge from branch feature/AddMissingListMethods
Ensure that new list operations use str
Add change log
Merge branch 'release/2.7.2.2'