fixed linear algebra tests!
forgot to remove a println in a test.
WIP towards an @expand macro for new code generation.
Ok, basic support works.
ok, expand is kind of ugly, but can probably do what we need to for now.
Yay!
expand now works for DenseVector/DenseVector operations.
docs for expand
clean up, more complex completion, and Long and BigInt!

Closes #34
Comparison operators for DenseVector.

Progress on #78
DV/SV ops.
don't need DenseVectorSVOps now!
SV/DV ops.
HashVector/DV ops
HashVector/HashVector operators.
HV/SV ops
SparseVector operators
axpy for DenseVector, small tweak to HashVector's
SV/HV ops
Go away.