BSaST list of crazy ideas

[earthbound19]

Split this into individual issues and cross them off as they are done or decided against:

• group PShapes with children in nested shapes (for SVG grouping)
• constraint-free mode (all shapes wander on initial vector without bouncing back)
• ~random orbits for outer and inner shapes?~
• optional randomly changing nGon sides (shapes) in nested shape init.
• option: even-numbered nested shapes cut out parent shape.
• move initialization of these randomization controlling varaibles into initial shape (which?)

[earthbound19]

Moved to Trello card; under consideration: https://trello.com/c/FIIz3qzd/103-bsast-transparent-bg-option