Changes

|Added Simplex noise 2D, 3D, 4D With seeded functionality(based on Sean McCullough's implementation). (Link to only the most recent commit)|httphttps://codewww.googlepivotaltracker.com/p/processingstory/issuesshow/detail?id=854&sort=owner&colspec=Stars%20ID%20Type%20Status%20Priority%20Owner%20Summary&19724583