start modifying heighchanger
same bugfix as in master according to var name grass
finished small cleanup and added comments+javadoc.
Finished small heighchanger cleanup and added comments and javadoc
Merge master into this branch
Deleted merge fails
Added javadoc for variables
Rewritten HeightChanger.findAffectedByRaised

The method (renamed to just findAffected) now follows an iterative
approach, which helps to reduce the complexity. Also changed the
structure to make use of functional operators, further simplifying the
method. The behavior in-game remains the same as before.
Code clean-up and restructuring.

Removed the old findAffectedByRaise method and cleaned up the code
and javadoc in HeightChanger a bit.
Merge pull request #11 from ZimonD/iterative-heightchanger

Iterative heightchanger