curtains 0.9.0+1

Wrap a scrollable with scrim Curtains while not at the start or end, alluding to unrevealed content.

📜 Curtains

[0.9.0+1] - 23 APR 21

• Initial release. Supports sound null-safety.
• One known 🐞 bug:
  • Even with Curtains.spread set non-negligibly, BoxDecoration.backgroundBlendMode does not work correctly.