Can should resolve if all rules resolve, reject if any reject, and resolve if no rules match
Ability to require that 1+ rules match via option
Can API: required is opt out instead of opt in
Full integration suite for Doctors
Allow multiple rules to be created for the same user/test/target (different methods)
Authorization API: to#administer for granting on all methods with #always
Ensure null is always the fulfillment value for can#do
Fix for falsey rule resolutions not rejecting and add value.length === 0 as a rejection conditon
Full integration testing for Can API