make JS's Math library more readable

• unlock some functions that make programmers' lives way easier

##randomChoice()

takes in an array and returns a random member of the iterable ex: randomchoice(['red', 'blue', 'green']) output: 'green'

##minAndMax()

takes in an array and returns a the smallest and largest number ex: randomchoice(['red', 'blue', 'green']) output: 'green'