• Added note about subtypes. ...

• Added note about Car_Feature.
• Updated minimum wage details.
• “Total” earnings → “gross” earnings.
• Clarified gross earnings calculation.
• Updated minimum year of car manufacture to 1995.
• Switched to automatic number formatting where appropriate.
• Added columns to Warranty and clarified descriptions.

• Removed references to “design-level” ERDs and modeified statement about analysis phase.

• Switched to Information Engineering notation to be consistent with INFO 211.

• Initial switch of scenario for 2014.

Moved scenario-specific code into scenario subtree and factored out globally defined values into various configuration files. Also replaced a bunch of things with global constants.