Dear Users,

1. (k64 only) A bug was found when the second argument of Partition is non-positive.

2. ListContourPlot now takes an option ColorFunctionScaling. If it is False, the value of the list is directly pased to the color function. The default is True.

Dear Users,

1. The definition syntax of Class is changed to avoid a crash when something like C=Class[{},{},] is declared by mistake. This change should not affect anything for a properly written program.