Please add document revision history to Dispenser's Guides

With a dispenser’s guide per state, there’s 50 dispenser’s guides to track and maintain. It would greatly appreciated if the dispenser’s guides had revision histories showing the changes to the documents. Would make data submitter’s lives a lot easier if they knew what changed between versions of the documents.

No need to go back on previous versions at this point. Just please add document revision history going forward.