Anders Rehan Pattern

1. Implement debugging state colouring - Anders

2. Change random parameters to get better ground coverage - Rehan

3. In chain has probability of disconnecting when (at front) or back - Rehan

4. Chains move around - (modified) random walk + search for chain

5. Better alignment at back of chain

6. Make sure sbot can approach chain of more than one sbot successfully

7. Fix distance at back of chain