#18

1. Only original score is kept for previous element calculation
2. Levitation bound for probability is set to 0.2
3. StateActions are saved in the previous iteration.
4. Self type rules are added.
5. Heatmap color code logic changed. Rank to score now. 
6. 	Gaze is accumulated based on history. 
7. The contributing gaze is calculated. 
8. Average gaze score related bug fixed.
9. State Action related bug fixed.