Version 0.2.0

• Add direction, dot product, and cross product equations in the Point struct.
• Add clamp number equation.
• Add constant expression in most functions.

Version 0.1.0

• Add 2D Point and 3D Point struct.
• Add distance equation in the Point structs.
• Add scale number, map number, and wrap number equations.
• Add radian to degree angle conversion and some angle equations.