Moved the old source code temporarily to src-old. This will be removed once the functionality has been transferred over into the new system.
The new design is based on algebraic principles. Thanks goes to sebcrozet and his nalgebra library for providing the inspiration for the algebraic traits: https://github.com/sebcrozet/nalgebra
This is what rust-geom uses, and it seems to make more sense. I originally used _t because it referred to the base generic type, but I think _s makes more sense.
