Source control on the dev repo is available using git.

checkout:

git clone git://github.com/stevedekorte/io.git

update:

git pull 

record a change:

git commit -a

Ideally, you'll set up a github or your own repo I can pull from, but if you prefer to send an Email patch, here's how to do it:

git format-patch HEAD^
[prints out patch names]
git send-email --to steve@dekorte.com 'patch name'

All contributions are considered to be submitted under a public domain license.

apply patch:

git apply patchfile.txt

unapplying last patch:

git reset --hard HEAD^