permit list INCLUDES value tests where value can be a string or number, not only a symbol
fix a bug that meant ITEM i OF list would always generate a syntax error
add support for using ‘ - x ‘, previously we needed to say 0-x or -1*x
permit the use of a variable to hold the index item in ‘ITEM x OF list
fix a problem in the evaluation of item x of list
added more demonstrations of the use of LIST (dynamic value) operations
added a test for using '-' in front of a symbol