Publication and last modified date, ideally with a change log

[a11ydoer]

Feedback via ARIA APG emailig list by Steve Green

"The new design of the APG looks good, but it would be really helpful if the pages contained the publication and last modified date, ideally with a change log. The WAI website is littered with content like this, but there is no way to tell how old any of it is. Some content is clearly out of date (to someone who understands the topic), but has not been removed or marked as obsolete or superseded.

It's also really important to know when pages change or are added, so it would be very helpful if there was a way so receive notifications.