One line change for IDDFS
Merge branch 'master' of git://github.com/dacto/haskell-cs331

Practice merging
Merge branch 'master' of git://github.com/dacto/haskell-cs331

Still working
Merge branch 'master' of git://github.com/dacto/haskell-cs331

Getting Kevin's changes
Changes to IDDFS