Working through ConvexHull#add_point
Start using Enumerable for ConvexHull iteration
Add next/previous edge methods for LinkedList
Fully implements ConvexHull
Moves some logic to the Point class
Refactors ConvexHull a bit
Make the particle's center public
Makes ConvexHull able to handle the case where the root node is removed
Creates sketch to investigate convex hull calculation
Makes convex hulls start off empty