Started working out our design...

* Expressions
	Created BooleanExpression, DoubleExpression, EntityExpression.

* Statements
	Created printStatements, SequencedStatements
	- Modification is probably needed to track where we last ended the program to re-continue next turn.

* ProgramFactoryImpl
	Started implementing several functions (Expression related is mostly done, statements yet to start)
	- Modification is probably needed due error-handling.

* Entity
	Added some functions to Entity to be able to ask for getX,getY,... so modified Worm/Food as well.

* Variable
	Created variable to hold our type and value.

* Tests
	Minor tests, were not even necessary (assignment).
* Added a few details to constructor to link our design to Worm/Program/ProgramParser/Facade/....