updated with Sven's work from March

I think I'll need to redo this again after you incorporate the name change.  The only code changes I made are the addition of a Stack class (subclass of OrderedCollection) with these methods:


    pop
        ^self removeFirst

    push: anObject
         self addFirst: anObject
         ^anObject

     top
         ^self first



After that 104 of 109 tests pass.  The failures are from Floats that are very similar not being equal.  There is one error I'm not sure about.