ASP stimulus objects
some data types byte -> int
RationalConsumer now only consumes Edge Networks if there is a positive
economic surplus.
NSP stimulus classes
Simple evolving NSP
added getNumEdges(x,y), which returns the number of edge networks owned
by all NSPs in the system at the specified location.  May be useful for
multiple stimuli; created for edge building and pricing.
More complex working test
test properties file for previous commit