Merge pull request #75 from OresteVisari/gh-pages

Issue #35: Store the latest score and the maximum score
Issue #76: Adding a vortex
Merge pull request #78 from Yoric/yoric

Issue #76: Adding a vortex
Pull #78 followup: fixing erroneous replacement of a for..in by a for..of
Merge pull request #79 from Yoric/yoric

Pull #78 followup: fixing erroneous replacement of a for..in by a for..of
Issue #56