Previous versions of Consul Show archive.org snapshot exhibited strange behavior when querying a power that returns nil.

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Consul 0.4.2+ behaves as expected:

power.notes # => returns nil
power.notes? # => returns false
power.notes! # => raises Consul::Powerless
power.note?(Note.last) # => returns false
power.note!(Note.last) # => raises Consul::Powerless