yea
Merge branch 'master' of https://github.com/byuimpact/numerical_computing into current

Conflicts:
	Vol2.tex
Began Sympy lab.
The first major poriton of the anisotropic diffusion lab.
Added Volume 4 to the labs.
added
generators lab

Commit file needed for generator branch.
Added color images and algorithm to anisotropic diffusion lab.
Added solutions to problems 1 through 3 for the Anisotropic Diffusion lab.
Added color picture with 1000 iterations. Also updated formatting a
little.
Merge branch 'master' into gens

Conflicts:
	include.tex
introduce itertools

Introduce the itertools library from the Python Standard Library.  We
should probably add a problem or two that use the iterators from
itertools.
Added some better alternate solutions to the anisotropic diffusion lab
Added the last portion to the Anisotropic Diffusion lab.
Updated solutions and graphics for Anisotropic Diffusion Lab.
Revision of Anisotropic Diffusion Lab
Fixed a typo in the Anisotropic Diffusion solutions.
A rough draft of the sympy lab.
A revision of the SymPy lab.
update explanation of generators

Describe generators a little more in detail.  Removed a less than useful
problem.