* Adding high-level integer functionality and polynomial evaluation in fixed-point.
* Restructuring Numerics.
* Adapt to naming convention.
* Add Numerics to pack step.
* Tabs to spaces.
* Primitive -> Intrinsic
* Fix naming of 2's complement inversion.
* Improved controlled poly. evaluation.
* Update Numerics/src/FixedPoint/Types.qs
* Applying first round of suggestions.
* Fixed a typo in one test.
* Last couple changes from review and discussion.