hsluv 1.1.3

Dart port of HSLuv, a human-friendly alternative to HSL based on human experiments.

[1.1.3]

• Update constraints to Flutter 2.19.

[1.1.2]

• Remove not null assert, which is not necessary anymore.

[1.1.1]

• Minor fixes related to null safety.

[1.1.0]

• Add null safety.

[1.0.6]

• Add addHue, addSaturation, addLightness, addHSLuv methods.

[1.0.5+1]

• Fix lightness and saturation documentation. It was saying they range from [0, 1] instead of [0, 100].

[1.0.5]

• Remove additional "(" in toString method from HSLuvColor.

[1.0.4]

• Initial port of HSLuv with a nice sample app.