Fraction: Detect repeating trailing decimal places

[imbue11235]

Currently fractions are humanized without looking at repeating patterns in the decimal places.
Therefore 0.3333 becomes 333/1000 instead of 1/3.

Task:
Implement ability to detect repeating trailing decimal places for more correct representation of the fraction.

Reference:
https://en.wikipedia.org/wiki/Repeating_decimal