Project: imageviewer, version 2.0
Authors: David Barnes and Michael Kölling

This project is part of the material for the book

   Objects First with Java - A Practical Introduction using BlueJ
   Fifth edition
   David J. Barnes and Michael Kölling
   Pearson Education, 2012

It is discussed in chapter 11.

To use this project, create an instance of class ImageViewer.
This version refactors some of the code to improve its structure.

For details, refer to the book chapter.
