Ninety-Nine Haskell Problems

These are my solutions to Haskell's "99 problems" code challenges.

Follow these steps to bootstrap your environment:

cabal sandbox init
cabal install --enable-test --only-dependencies

Then verify code correctness by invoking:

cabal test

Many thanks to @kazu-yamamoto and @tfausak for their guides on how to set up proper test suites in Haskell.