Added pynboids2.py version, an update to the original pynboids, with numpy array methods from pixelboids.py to improve efficiency. 2x more boids then b4. Added pixelboids.py version, draws boids as ...

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Everybody likes multiple dispatch, just like everybody likes plums. The design philosophy of Plum is to provide an implementation of multiple dispatch that is Pythonic, yet close to how Julia does it.