Added a method for calculating the GeoCoordinateBox of a TileRange.
Edited DeclarationInt enum values to have TextOffsetX and TextOffsetY.
Implemented text-offset-x in MapCSSDomainParser.
Implemented text-offset-x and text-offset-y in MapCSSInterpreter.
Changed default max-width to 30.
Moved Area casing to OffsetArea so overlapping areas dont have overlapping casing.