This is a complete rewrite of the geometric algebra module to more

efficiently use the capabilities of sympy.  This does not mean the new
module runs faster than the old (yet), but rather is simpler to understand
(the code) and to extend.
The new module includes a new section on vector manifolds and
examples, tests, documentation and a dependencies directory that allows
one to use and ansi console (enhanced printing) on Windows.
A complete description of the rewrite is in the html documentation.
All the tests pass and the examples run.
There are instructions in the documentation for installing all that is
needed to use the latex printing options.