merged with v224
moving files from website
merging changes from v224
movig documentation to doc
changes from merge with v224
no message
no message
new version number
using new Operator class
changes for using the new Operators class
???
ensured no invalidID is used in setOperator
added isValidID
Adding a getFunctionTable command, to allow other packages to
find out the current fuctions and PFMC's.
I need this for djep to work.
Mainly as a test to see if I can use CVS.
A major overhall of the class. Created an Operator inner class 
which contains all the information about the operator. 
For instance commutatitivity and associativity.
Functionallity is extended so that new operators can be added.
back to rev 1.2 code (assuming 1.3 was accidental)
no message
removed unnecessary imports
replaced errorFlag with !errorList.isEmpty()
added stack.removeAllElements() before evaluation to ensure stack is clear
more detailed Exception information
changed from createNumber(double) to createNumber(String) to allow creation of arbtrary precision numbers