Added a simple circular buffer implementation
Added a simple circular buffer implementation

* Will be used to hold past robot positions

RoboJackets/robocup-software,RoboJackets/robocup-software,JNeiger/robocup-software,RoboJackets/robocup-software,JNeiger/robocup-software,JNeiger/robocup-software,JNeiger/robocup-software,RoboJackets/robocup-software,JNeiger/robocup-software