Create test and implement code for ex0
Add exception for wishes string in ex0
Create test and implement code for ex1
Create test and implement code for ex3
Create test and implement code for ex4
Create test and implement code for ex5
Create test and implement code for ex6
Create test and implement code for ex7
Create tests and implement codes for ex8 and ex9
RPS game works for single games
Complete gameplay for RPS
Change replay question so user can only answer with y or n