v0.2.0

Two pressure curves in series, with an effective curve chart showing the
pair collapsed into the one mapping the brush obeys. Presets saved before
this load unchanged, as curve 1 with curve 2 bypassed.

Also since v0.1.0:

• Light / dark / follow-system theming, reached from a new Options dialog
  behind a gear in the ribbon. The drawing canvas keeps its paper in both
  themes so strokes stay readable.
• An Inverted curve type.
• Three-state card pills: Off, On, and On with no effect.
• Type-scoped reset, which restores the curve you are on instead of
  jumping back to Passthrough.
• Basic no longer applies range values it never shows.
• A collapsible telemetry ribbon and tighter chart cards, for presenting.
• HiDPI fixes: strokes render at device resolution and track the pen tip.
• A UI refresh onto one Fluent vocabulary.

127 tests.