Removed old AbstractAgentNeighbourList class.
Made Neighbourlists protected.
Fixed classes for neighbour-list.
Also fixed DeerAgent.
Tried to optimize the neighbour algorithm.
Improved performance.
Changed into ArrayList for more performance.
Working on neighbourLists.
Added mean value printout to each iteration.
Now one can make a stat object.
Merge remote-tracking branch 'origin/Neighbourlist'