NLP for quantity

[AfoxDesignz]

I thought about adding the ability to parse quantities in natural language. There are packages like compromise-numbers and for multi-language support de, fr, es, it, pt versions of compromise. However, there would still be the need to parse some things manually, like "A gram of sugar" -> quanitity = 1.

This would probably not be backwards compatible in some cases, but I think it would be a very good addition to the parser. What do you think about that?

[jakeboone02]

Propose some test cases, including some that would be breaking changes, and I'll definitely consider it.