feat: adds support for blpop and brpop commands
fix: bpop tests expect correct returns
fix #49 - convert member to string in zscore and zrank
Merge pull request #50 from noise/feature/issue49

fix #49 - convert member to string in zscore and zrank
ref #47, tweaks based on review
Support disabling load dependency loading.
Extend call normalization to work for zrevrangebyscore. Add tests.
Use str.lower()
Collapse tuples
Merge branch 'feature/ISSUE-52' into develop
Bump version
Compare LIMIT and WITHSCORES case-insensitively

Issue #52:
Accept any case for the zrangebyscore and zrevrangebyscore keyword
arguments.
Merge branch 'feature/ISSUE-53' into develop
Whitespace cleanup
Bump version
Merge branch 'bpop' of git://github.com/tim-dev/mockredis into tim-dev-bpop
Added mulit-key support in blpop and brpop commands. Added blocking_timeout attribute. Added brpoplpush command.
Using elasped time instead of sleep to check the timeout.
Minor refactor.

SS-3521
Added small delay for each iteration to avoid high cpu utilization.
SS-3521
Bump version to 2.9.0.5