v0.0-beta0.3

v0.0-beta0.3 (Released - 12th June, 2017)
-Restructured part of the code
-Fixed some bugs
-Added divide()
-Added modulus()
-Added random()
-Added randomInt()
-Added isPositive()
-Added isNegative()
-Added isInteger()
-Added isEven()
-Added isOdd()