[wp-hackers] Developer portal

[Beau Lebens]

> I'd love to see clear indications of both the WP version the info was written for, as well as when the entry was written/updated.

I definitely agree with this, it would be very helpful (ideally all
information would just be up to date, but obviously that's not going
to always be the case).

> That might be able to ease upkeep as well if reminders to the author(s) could be set based on version or date. For instance, a reminder could be sent out to check/update content on WP version change or after six months or so.

We could just send out a reminder every time a major version of WP is released.