Add an example parser that mixes in the RegexParsers trait
Add a simple program that can parse JSON
Implement the full JSON parser that returns meaningful results
Add an example parser that demonstrates how not to skip whitespace
Add MyFirstScalaSwingApp, my first scala swing app
Add MySecondScalaSwingApp

It's an initial version with no event handling
Add some button click event handling to MySecondScalaSwingApp
Add TemperatureConverter, my third Scala Swing App
Add the beginnings of a Scala Spreadsheet application
Separate the concept of what is displayed from what is entered in a Spreadsheet cell

. . . albeit in a very crude way, for now.
Add an initial hierarchy of SpreadSheet Formulae

. . . case classes that represent possible types of Spreadsheet cell contents