v0.0.3

0.0.3

• New docs/intro.md, add nullable examples to docs/primitives.md.
• Add sizes binding to <point /> to change per-point size.
• New <mask /> pass for custom transition effects, remove clip leftover.
• Fix <clock> reporting incorrect real time and delta.
• Fix <step /> counting repeated stops as skips.
• Fix docs on <transition> durationEnter/Exit.
• Fix <scale /> not tracking span changes.
• Fix color [r, g, b] syntax parser.
• Remove children in reverse order to avoid reindexing.