Move reply to class property
Rename reply -> response
At the point where we prevent owners from unsubscribing.
Adding comments
Get a list of node owners
Add code and tests for retrieving node owners
Only allow owner unsubscribing from a node if there are more than 1 owner
Add missing method
Merge pull request #81 from surevine/issue-68

Only allow owner unsubscribe if there is more than 1 owner (i.e. another owner)