Latest commit c4c8ff1 Aug 17, 2017 Ben Avery Ben Avery Refactor multipleOf and divisibleBy to perform integer calculations t…
…o avoid IEEE-754 float innacuracies.

This was causing, e.g. 2.4 not to be a multipleOf 0.1.
The code multiplies by the minimum factor of 10 so that the modulo calculation is performed on integers.
 All credit goes to @manahga for coming up with this solution.