Crate truck_base

Basic structs and traits: importing cgmath, curve and surface traits, tolerance

Modules

bounding_box	Defines bounding box
cgmath64	Redefines vectors, matrices or points with scalar = f64.
cgmath_extend_traits	Additional traits for cgmath
geom_traits	Abstract traits: Curve and Surface.
id	ID structure with Copy, Hash and Eq using raw pointers
tolerance	Setting Tolerance