Change RedisBackend to accept Redis client directly#755

Dreamsorcerer merged 20 commits intoaio-libs:masteraio-libs/aiocache:masterfrom

ben-cutler-datarobot:bcutler-isolate-client-for-sslben-cutler-datarobot/aiocache:bcutler-isolate-client-for-sslCopy head branch name to clipboard