v0.6.0

• New tetrahrdeons now drawn each frame, away from the camera.
• Fixed several code warnings
• Added LIFE_FORM_CONSTANT

Video 6 in the series is an edited live stream of this release:
https://www.youtube.com/watch?v=7eqbyGM35po&list=PLinYK18arSGE9FyZ9wAZTO391BiUPQqae&index=6