[x] example that illustrates embedding animation in pdf, so that we'll
generate graphs that are useful.
[ ] Write code (explicit.pyx) to automate computation of each of the
following. Each animation will be generated and stored as a
single pdf file, with 1 page per frame.
* Animation that illustrates behavior of the mean of raw data, for
various curves.
* Animations that illustrate computing sums over zeros for elliptic
curves having various interesting symmetric power L-function
properties.
* Race four types of primes... for two elliptic curves.
[ ] Run code for interesting curves, using powerful computers.