There's a couple ways:
You can go to the source code view, create a fork, push your changes to the fork (You have to use Tortoise HG or a Mercurial client) and then send me a pull request.
You can create an issue and add the code as an attachment to the issue.
You can click on my name to go to my profile, and then click the contact link to contact me directly. From there you can email me the changes.