2017-04-11 UTC
# 
miklb All I know is if I include a photo in a post and add `u-photo` it shows up in a tweet. If I don't it, doesn't. I wasn't aware of any other mf2 to use. Wordpress doesn't allow for you to add your own classes when you add the "featured image", which is very useful for being able to display different sizes in different contexts.