2.1.1

• Change test import to absolute path: #5

2.1.0

• Add normalized accessor
• Add Angle.cartesian constructor

2.0.0

• Add a ratio() function.
• Angle.atanFullTurn() now creates angles which actually make sense.
• range argument of approximately() must be non-negative.

This version requires Dart 2.

1.2

Add equality comparision, the hash code function and approximation testing.

1.1

Initial release.

Dart package