These builds will be nightly builds because every day cm change something in their code, some of these are feature adds some are bug fixes. These nighties can include the fixes and I am in no way working on or helping modpunk on cm10. I'm just providing nightly builds because CM10 is changing constantly and modpunk won't be uploading daily builds.
Changelogs are going to be a hard thing to do, so what I suggest is that you take a look here for a nightly changelog. It says it's for the GSM Galaxy Nexus, but it still includes the upstream CM changes. A guide to understanding this changelog is that all the changes start with the specific repo that has been modified (for example, if something in the framework was changed, the change will begin with "framework:"). If the first bit is anything other than a device (e.g. "i9000:", "maguro:", "toro:", etc.) then it's upstream and is included in the nightly.
I've created a script (which is here if anyone is interested), that will build and upload a nightly every day. And I guess that's all there is to it.
Downloads will all be hosted at the link below and obviously the file with the most recent date is the latest nightly.