DESIGN
A map of North America has been added to the player's inventory upon starting a new game. For existing saves, going onboard your ship once will give you the map.
PERFORMANCE
Set some more variables to not force a map refresh when updated. By default, the engine does (or rather, did) this with any and all variable changes.
SkipUpdate added for static elements while in-town.
MISC
Maine's state code has been changed to ME. Originally, and during the actual historical era, Maine was still administratively part of Massachusetts (MA). However, for the sake of player convenience, we can move forward a bit in time (as the state codes themselves are also more modern).
Moved Philadelphia.
BUGFIXES
Cargo upgrade text has been fixed to the proper amount.