My own personal library of Sage[1] code.

It is intended to be loaded into every Sage session, or Python script
which imports the Sage library. Sage loads ~/.sage/init.sage upon
startup, so I've supplied a sample init.sage file which will load this
code from ~/src/sage/.

Newer versions of Sage don't load ~/.sage/init.sage during test mode,
and "packages" need to be imported explicitly. Therefore the test
suite is a little tricky to run; but "make check" should work.

[1] http://www.sagemath.org/