Added methods CompareTo and Iterator
Added methods Iterator and CompareTo
Merge branch 'master' of
https://github.com/MaximeRyckmans/JavaOefeningen.git
Merge branch 'master' of
https://github.com/MaximeRyckmans/JavaOefeningen.git

Conflicts:
	Oefening1/src/model/Quiz.java
Sorry
Opdracht() Added compareTo()
Added methods to write and read objects from text, but not complete -->
difficulties with abstract class.