TODO

1. Create a proper extension module for crunch.c.
2. Improve the installation instructions. Possibly split to install guide and usage guide.
3. Make Zeta into an experimental SageMath package.
4. Add doctests to all modules, and add them to the documentation.
5. Update CHANGES to use ReST.
6. Use Sage LaurentPolynomialRing?
7. Use the Sage LattE interface, or consider an update to it by adding maple.cpp as sage.cpp. See trac ticket #18232, trac ticket #18211, trac ticket #22067, trac ticket #22099, trac ticket #22109, trac ticket #22066, trac ticket #22111.
8. Add topzetas.txt to the static documentation.