Version 1.4.1:
	- Fixed bug in GeomGridField.toPoint() where Y axis was inverted.
	- Minor fix to WaterWorld where Java RNG was used instead of SimState.random

Version 1.4:

	- Grid and vector layer exporters available
	  - ArcInfoASCGridExporter
	  - ShapeFileExporter
	- IO classes simplified; now use static write() calls
	- MasonGeometry attributes simpler to use
	- Bug fixes
	- Demo data directories now under respective source directories
	- Minor code clean-ups

