piecemeal 0.3.7

Basic data structures your 2D game may need.

0.3.6

• Add Array2D.fill().

0.3.5

• Add Rng.shuffle() and Rng.setSeed().

0.3.4

• Add Line and Circle classes.

0.3.3

• Add Rng.percent().

0.3.2

• Add Rect.offset().

0.3.1

• Fix type error.
• Use real generic method syntax.

0.3.0

• Get rid of implicit casts and dynamic.
• Make Rng.item() and Rng.take() generic methods.
• Add Rng.float().

0.2.1

• Make strong mode clean.
• Fix bug in Rect.clamp().

0.2.0

• Make constants lowerCamelCase.
• Remove sign() and clamp() since the Dart core libraries have them now.

0.1.1

• Add CARDINAL and INTERCARDINAL direction lists to Direction.