Haskell: solutions to 14 and 16.
Haskell: naive solution to p15 is too slow.
Merge branch 'master' of https://github.com/willrogers/euler
Haskell: Int to Integer in function definitions.

Using the specific type Int leads to overflows.  Using the
generic Integer typeclass prevents this.
Haskell: solution to problem 20.
Haskell 16: move sumdig to Utils.