disable multi-step commands in pipeline context until we can match the behavior of redis-py.
Merge pull request #31 from happybits/blocked-pipeline-commands

disable multi-step commands in pipeline context -v2
split out exception handling logic for moved keys into a function that can be used later in the pipeline context
implementing the ASKING protocol
testing ASK and MOVE
Merge pull request #32 from happybits/handle-cluster-command-exception

split out exception handling logic for moved keys