Makes sure Twitter cards are by default enabled since they don't need to be validated anymore by Twitter.
Removes the Twitter url meta tag, since Twitter no longer uses it.
Shows a validation error when a user selects a featured image for a post that is smaller than 200x200 pixels.
Shows a validation error when a user tries to use shortcodes in the titles and meta's settings page that are incompatible with the type of content those titles and meta's are associated with.
Makes sure no taxonomy metadata is lost with the upcoming 4.2 version of WordPress.
Upgraded to Facebook Graph API 3.0 for fetching Facebook user ID's straight from Facebook.
Made the plugin conflict notices more user friendly, explaining better which piece of functionality might be impacted, offering a link to the corresponding settings and a button to deactivate the conflicting plugin.