Add flooring of base on assignment, Add addition of negative and positive numbers, Add subtraction of negative and positive numbers, Separate check for even numbers in an odd base for reusability, Add extra array memory allocation where new length is calculable
Fix base not assigned when initialized with zero, Add methods and checks for division but no functionality
Update README.md, Add checks for divideAndRemainder/DivideAndRemainder
Add subtract implementation, Fix bugs with Add and Subtract, Add tests for functionality, Notice bug for Half method and how it affects Pow method
Update tests, Fix Half method bug (Negative numbers floored up instead of down, e.g. -99 / 2 should be -50, not -49)