v0.2.0

Added

• npm run release -- patch|minor|major: one command that rolls this changelog,
  restates the size in the README and the demo, bumps, tags, pushes, publishes to
  npm and opens a GitHub release. AGENTS.md and .agents/skills/ document how to
  develop, test and release the library.

Changed

• Only text is split. A block-level piece that is not running text (a media
  tile, a button row, a table, a box-like custom element, a summary, a block
  matching ignore) used to be one unmasked line, and was revealed as if it
  were text; it is now left exactly where it is and is not a unit at all, so
  lines, words and chars hold text units only. An inline-level piece
  still rides along inside its line and still counts as one word.
• A float is no longer left inside the line block the cut dropped it in, where
  the line's animation carried it along. It is put back in front of the block
  of the line it floated beside, at the same top, so the lines still flow
  around it as painted and nothing animates it.
• A floated drop cap (a ::first-letter with float) is a float like any
  other: its restated glyph now sits in front of the first line block instead
  of inside it, where the line's mask clipped it to one line's height during
  the reveal and the line's animation moved it.
• A word or char split of a paragraph with a floated drop cap no longer widens
  the first word by the glyph's box: the word is measured without the glyph,
  the glyph has no extent among the graphemes, and the char unit it leaves is
  dropped rather than kept as an empty unit.
• A run with nothing to split (a lone float, an ignored element, a <br>) is
  left exactly as it is instead of becoming an empty line.