Added convert constructor to Vector.
Added new 64 bit conversions for Int.
Added default for IsIntrinsic().
Added unsigned promotions. Added conversions for all intrinsic integer types.
Added [SG]etBitAtIndex functions.
Added generic promotion functions for oeprators <, <=, >, and >=.
Added operator< for Int<>.
Fixed Fixed operator-().
Added operator* to Fixed<>.