H1: change the implement of Changer and add unit tests. Boxing
H1: add gradle plug-in jacoco. Boxing
H1: improve test coverage of Validator. Boxing
H1: delete useless part of InputAndOutput. Boxing
H1: improve the readability of methods in FizzBuzzWhizz & FizzBuzzWhizzMurmur. Boxing
H1: input is multiple of all defined numbers whose amount is four will return bingo. Boxing