Wanted: Blogging Platform with Revision History

I'd love to have a blogging platform that supports a Revision History of Published Posts:

Desired features:

• Each published version of a posting would be saved.
• Readers would be able to see a list of versions.
• Reader can choose to view a specific version.
• Reader may compare any two versions.

I'm imagining that each posting would be stored under some kind of Revision Control system, similar to how wiki's treat pages.

I'd be glad to help make this happen.

I've posted this in the BloggerDev group - if you are reading this and agree, please go there and post a "me too" comment.

Technorati Tags: blogging, revision control