* Improved abort handling
* Always include report if state.tests['Disk Self-Test'] is enabled
* Send abort command via smartctl if aborting self-test(s)
* Added separate Disk().check_attributes() function
* Can be used to check all KNOWN_ATTRIBUTES or just blocking ones
* Renamed ATTRIBUTES to KNOWN_ATTRIBUTES for clarity
* Renamed 'Critical' column to 'Blocking'
* Added '(Failed)' note to attribute report
* Addresses issue #131
* Raises an exception for blocking events
* Removed "Ignore" column from ATTRIBUTES
* Listed attributes should either be warnings or errors
* Only 'Critical' attributes should block futher tests
* Use 'bus' instead of 'proto(col)' or 'tran'
* I think it's a better description
* Reordered details alphanumerically
* Removed 'log-sec' from required details
* Only concerned with the phy-sec