'(Int, Int, Int)' has been replaced by 'Reels'
Now the winning coins are added by using 'getPrize'
closes #57

I've added new abstractions, for instance, type Reels. I've improved
some functions up. And finally, I've made the first *overreact* query,
which let me extract certain information from the state.
Merge pull request #61 from jeslg/smclean

Smclean