Add "created" timestamp to tagged items for "most recently tagged" and "least recently tagged" filters

[thenewguy]

It would be very helpful to have the creation timestamp for a tagged item. It seems like this information would be generally useful and would allow adding most_recent() and least_recent() like similar_objects() and most_common()

[rtpg]

Yep that definitely makes sense (I tend to add created/updated timestamps on all of my models as a general principle). For now it's easy to create a custom tag class to get this functionality though