differ 1.3.0 stable

This release was quite a while in progress!

The goal of this release is as follows :

• Reduce the usage of Vector internally, simplifying the code to primitives
• Remove allocations, myriads of them the old code had that carried over
• Add ways to reuse allocated results for efficiency when querying
• Add more test/example cases
• Expose the alternative polygon vs shape overlaps to make better choices based on movement
• Move the code more forward to be internally consistent and maintainable
• Fix the bugs with the rays and add more useful infinite flags

All of this was achieved, with the following changes.

• Refactor continued clean up
  • remove all allocations in SAT2D, except for results if not provided
  • refactor away internal uses of Vector
  • remove superfluous use of Vector in the API
    • ShapeDrawer: drawLine,drawPoint
    • Collision.pointInPoly
• Added Ray infinite mode instead of boolean
  • Not infinite
  • Infinite from start position
  • Infinite in both directions
• Added Rays test in usage0
• Added ShapeCollision/RayCollision/RayIntersection
  • added clone(), copy_from(other), reset()
• Added differ.math.Util
  • removes internal SAT2D use of the Vector class
• Added into argument for all internal and external calls
  • this reuses the existing instance for the result
  • all calls will always reset the collision result
  • all direct calls still return null as "no result"
  • added Results<T> results cache helper
  • all plural calls return Results<T>
• Fixed Bug in testCircleVsPolygon
  • When testing polygon vs circle values were flipped/wrong
• Fixed Bug in rayVsRay with a negative overlap
• Removed Common util class, it's internal to SAT2D and simplified now
• Removed drawVector in ShapeDrawer, wasn't used (use drawLine if needed)