Windup 210: Simplification of Classification and Hint

Not sure if you will like the classification simplification, it is quite hacky.
However, I seperated both simplification to two different commits.

Both of them are now able to use the "pass variableName from Iteration" simplification.
I would prefer this to be just `as` instead of `classifyAs`. That's the whole point of calling this class `Classification`... `Classification.as(...)`