Extended Array Object

This class can be used to create and manipulate arrays as objects in a similar way to Ruby and prototype framework.

It can create array objects from an existing array value or from a list of array member values.

The class provides functions to:

- Traverse all array members using a callback function
- Determine the different between two arrays
- Get the first and last array values
- Find the position of a given array value
- Dump the array structure
- Reverse or shift the position of the array values
- Pop an array member from the end of the array