Added Functor?
Added an instance of Functor for Maybe
Added an instance of LogicValue for Maybe.
Added Equatable for Maybe.
Try to test :(
Fixed formatting.
Functor boxing
fixed formatting
Merge pull request #22 from maxpow4h/functorx2

Functorx2
Test none.
S P A C E
Merge pull request #21 from maxpow4h/functor

subclass based Functor added