So I've put together a github (social coding) project for this matrix
calculus project. Anyone that wants to contribute, I suggest you create a
free Github account.
Github has a very good "getting started" page. I believe it basically
consists of:
1) downloading the github software
2) creating an account
3) creating a public and private key (they give you step by step
instructions)
4) submitting a pull request or just provide me your username and I'll add
you as a collaborator.
There is a GUI as well a command line interface (which provides similar
syntax to svn)