New Features in 0.4

Ability to configure both interlock and HRM (@johnharris85)
Configure orchestrator for node kubernetes, mixed or swarm
Create labels for nodes
Set availability for nodes
Clearer output around service/task health
Capability to remove a node cleanly from both swarm and ucp configuration
Capability to upgrade UCP and view what versions are available
Fix for UCP 3.0.3+ around granting roles needing a uuid (@joeabbey)
Capability to look at a diff of a spec and previousSpec of a service, allowing ease of spotting changes.
LDAP support
Subscription filtering by OS (@joeabbey)

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