Expression evaluator

Element	Missed Instructions	Cov.	Missed Branches	Cov.	Missed	Cxty	Missed	Lines	Missed	Methods	Missed	Classes
Total	442 of 3,304	86%	33 of 381	91%	47	284	126	581	14	84	6	10
org.djutils.eval		86%		91%	47	284	126	581	14	84	6	10