v0.3.0

• Adds a simple Fraction class to represent fractions.
• Adds Complex.toString().

v0.2.0

• Adds a simple Matrix class.
• Adds a simple Vector class.

v0.1.0

• Complex' constructor now has imaginary part set to 0 as default.
• Adds Complex.sqrt() to compute the square root of a complex number.
• Adds Complex.mod() to compute modulus of a complex number.
• Adds Complex.polar() to translate to polar coordinates.

0.0.1

Initial release with a minimal feature set.

• Added basic infrastructure for building and testing.
• Added the class Complex to represent complex numbers. The class includes methods for addition (add()), subtraction (sub()), multiplication (mul()), and division (div()).