MultiSetZSet ready except for some in place operations that will require Lua.
Merge branch 'master' of https://github.com/stephenmcd/hot-redis into feature/collections_using_Redis_SortedSet
adopted transaction features from  upstream,  temporary implementation of in place operators,  updated documentation
Removed hash implementation of MultiSet, lua functions for inplace operations on SortedSet backed MultiSet, updated documentation, and AUTHORS
Merge branch 'master' of github.com:jmizgajski/hot-redis into feature/collections_using_Redis_SortedSet

Conflicts:
	hot_redis/types.py
Merge branch 'master' of github.com:jmizgajski/hot-redis into feature/collections_using_Redis_SortedSet

Conflicts:
	hot_redis/types.py
Merge pull request #2 from glowskir/feature/collections_using_Redis_SortedSet

Feature/collections_using_redis_sorted_set