v0.21.0.
Fixed some commands mix-ins; if command arguments are an array, don't touch it, use slice instead of shift.
On branch master
modified:   lib/commands/connection.js
modified:   lib/commands/hashes.js
modified:   lib/commands/hyperloglog.js
modified:   lib/commands/keys.js
modified:   lib/commands/lists.js
modified:   lib/commands/pubsub.js
modified:   lib/commands/scripting.js
modified:   lib/commands/server.js
modified:   lib/commands/sets.js
modified:   lib/commands/strings.js
modified:   lib/commands/transactions.js