MySQL\Literal

Added the Literal class to the MySQL namespace.  This class allows strings that should not be escaped -- calls to MySQL functions, for example -- to be explicitly identified and passed through untouched to the database.
Event::AddCommon

Added the AddCommon method to the Event class.

This method adds fields and default values common to all events to an object.

Since some events will have exceptional table structures, this is opt-in -- i.e. it is not called automatically from the Register method, the consumer must opt to call it to retrieve these common fields/values.