union-angle-0.1.0.0: README.md

# union-angle

Union type that include radian angle and degree angle.

```
> a = Radian pi
> a
Radian 3.141592653589793
> degree a
180.0
> Degree d = a
> d
180.0
> Degree 180
Degree 180
> it + Radian pi
Radian 6.283185307179586
```