Formatting.
First task.
Add a signature.
Add an iterative version.
New tasks.
New tasks.
New tasks.
Cleanup.
Add new task.
Clean compiled Haskell code.
Housekeeping.
More housekeeping.
New tasks.
Modifications.
New task.
Housekeeping.
New task.
Housekeeping.
Remove a type signature.
Merge branch 'master' into exercise-12