v7.2.0

• 2014-07-14: Unifying download response header behavior [Jeremy Friesen]
• 2014-07-17: Ability should use the rails logger rather than Loggable [Justin Coyne]
• 2014-07-18: Adjust the tested versions of Ruby to the latest patch available on Travis [Justin Coyne]
• 2014-07-17: loosen active-fedora spec to ~> 7.0 in preparation for 7.1.0 [Justin Coyne]
• 2014-06-24: Only deactivate lease/embargo when there is a lease/embargo deactivate_lease! and deactivate_embargo! shouldn't do anything unless there is a lease_expiration_date or an embargo_release_date [Justin Coyne]
• 2014-06-24: Upgrade to rspec 3 [Justin Coyne]