Announce: Units, Spin Algebra etc.

[Yuri Kandrashkin]

Hi group,

I have prepared the package Spin` that consists of several applications
which are designed for research in the area of magnetic resonance and spin chemistry and physics.

The applications Unit` and LoopControl` can be useful to a broader
audience.

The package and short outline is available at:
http://sites.google.com/site/spinalgebra/.

Sincerely,
Yuri Kandrashkin.