Fix some warnings in monads.hs

- remove useless data IIO
- remove executeMyStep as it is better to use pattern matching
nagel improvements

- all moveAllCar
- remove all warnings
- also fix a hand full of warning in Second.hs / levenshtein
Add new module CircList
Add a simple guessing game where you guess a random number and receive comparison feedback
Change CircList to have at least one element

- allows to make CircList an instance of Comonad