Ignores python utility files
Initial model class design
Initial ModelObject class design
Renamed getters and setters
Changed setter return types to void
Removed const from setters
Implemented basic setters and getters
Added Advance function
Updated comments
Implemented constructors and Advance
Added declaration for Update
Shape represented as radius with double precision
Added gravity and overlap helper functions
Renamed setters/getters to follow style guide
Changed mass to use double precision
Added Vector3D typedef
Changed to use ModelObject
Simulator uses references instead of pointers
Replaced NVector with Vector3D
Changed calculateForces method to public