Release 1.0.0b9

This release introduces some functionality changes:

• !physics tracks start time instead of last time and maintains a zero-based internal clock
• The counter() function has been dumped in favour of new !counter objects

Additions:

• !physics systems can insert additional time steps if spare CPU to catch up on missed steps
• Approximations of sphere and line/capsule lights are now available in !canvas3d

Fixes:

• Specifying spotlight cone sizes was broken in the b8 release