[initial quadtree stuff
tim@dockerz.net**20080712140231] 
[Added priority queue
tim@dockerz.net**20080712140410] 
[Fixed QuadTree efficiency for interiors of circles
tim@dockerz.net**20080712141645] 
[Fix intersection algorithm
tim@dockerz.net**20080712162322] 
[Add demo of path finding
tim@dockerz.net**20080712162338] 
[Added appropriate costs for diagonal moves
tim@dockerz.net**20080712164006] 
[Refactored geometry primitivies into their own module
tim@dockerz.net**20080713101745] 
[Added alternative QadTree type for storing values
tim@dockerz.net**20080713112309] 
[Merged with itscold git repo
tim@dockerz.net**20080713113348
 
 - Added in existing code
 - Added in local copy of parsec (unsure why this version is required)
 - Added in cabal file
 
] 
[Added typedef for circle
tim@dockerz.net**20080713114104] 
[Assorted fixes and tweaks so that the program now handles stepping
tim@dockerz.net**20080713133852
 from one round to the next.
] 
[Implemented rover control as a state machine
tim@dockerz.net**20080713140419] 
[Added printing of commands sent
tim@dockerz.net**20080713141456] 
[keep track of craters and boulders seen
tim@dockerz.net**20080713144427] 
[Fix path finding when negative coordinates are involved
tim@dockerz.net**20080714133709] 
[Large set of changes to add path finding logic
tim@dockerz.net**20080714143646
 
 Still doesn't seem to work, unfortunately as the LowerLevel brain
 doesn't seem to have enough control to follow the path
]