v3.1.0-dev.1

Changes:

• Experimental:
  • Added ClampingWithOverscrollPhysics scroll physics, that together with indicator controller allows handling overscroll correctly.
• The indicator's cancel duration is now based on the dragging progress.
• Updated the dart sdk constraints to >=2.17.0 <4.0.0
• Updated example app native dependencies

Full Changelog: v3.0.0...v3.1.0-dev.1