Updated Strategy README
Added OO Design Pattern Guidelines
Added publishing project info
Initialize Ch2 Observer
WeatherData object delivered from Weather-O-Rama.
p.42 first, misguided SWAG. Coding to concrete implementation(!)
Started implementing Observer Pattern: added interfaces.
added IDisplayElement
Refactored classes to interfaces
Added constructor to display elements for reference to ISubject to allow unsubscribing.
Added missing IDisplayElement inheritance.
Added code to calculate stats and forecast.
Removed unused fields in WeatherData
Added output to WeatherData.measurementChanged()