Added Location and LocationPersistence.
Added Location and LocationPersistence.
Removed dead code.
Added StaffPosition, StaffPositionPersistence with specs
Added Resident, ResidentPersistence with specs.
Added delete_all method to Location, Resident, MealType, MealTypeCourse, and StaffPosition.
Added StaffMember with specs.
Refactor XxxPersistence classes for consistent naming of collection_from and instance_from methods (abstracting).
Refactored for consistent implementation of collection_from and instance_from.
Added OfficeHour with specs.
Added TransportationSchedule with specs.
Assure that Date or Time attributes are properly cast before being read as attributes.
Version bump to beta.