Moo

## Description

Moo is a simple terminal implementation of the guessing game known as ‘Bulls
and Cows’, which is itself similar (but earlier) than the board game
Mastermind. A random assortment of 4 digits is selected by the computer and
must be guessed. A successful guess in the correct position is referred to as
a ‘Bull’, while a successful guess in the wrong position is referred to as a
‘Cow’. Guessing all numbers in the correct position (four Bulls) wins the
round.

Moo