Incorporated age calculations so children don't all join as 18 year olds. Legacy children will now inherit the age that the game's hardcoded formula deems most appropriate.

Updated the logic for the children of 2 parents.
-> If 2 parents are involved in the child event, a Legacy Child will only appear with an exact parental match.
-> If there is only 1 parent in the event, any valid Legacy Child can appear, regardless of who their second parent is.

Proof of Concept/Beta Release