Merge pull request redis#385 from go-redis/fix/enable-reaper-and-add-…

…tests

Enable reaper on ClusterClient and add tests.

Merge pull request redis#380 from go-redis/fix/pubsub-resubscribe

Simplify resubscribing in PubSub.

Merge pull request redis#375 from go-redis/fix/cluster-without-nodes

Don't panic when cluster does not have valid nodes.

Merge pull request redis#377 from go-redis/fix/cmdable-pipeline

Add Pipeline to Cmdable.

Merge pull request redis#371 from go-redis/fix/try-go14-fix

Try to fix Go 1.4.

Merge pull request redis#368 from go-redis/fix/cmdable-iface

Fix Cmdable interface.

Merge pull request redis#366 from go-redis/fix/option-defaults

Set some sane default for every day usage.

internal/pool: improve tests.

Merge pull request redis#361 from vkd/v4

fix iterator across empty pages

Merge pull request redis#356 from domodwyer/v4

Add Cmd constructors for testing/mock purposes.