This is a sizable bug fix and improvement update which addresses several user reported bugs and brings the addon close to public stable release. The addon has now been extensively tested on PHP8.x along with numerous third-party addons, including officially supported content-related addons (AMS, XFRM, etc).
The addon is considered stable on PHP8 with the exception of any user-reported issues regarding compatibility with other products.
In addition, the recommendations system has been tweaked to longer factor missing meta fields, and will display results separately for either missing description fields, or meta fields. The addon will automatically update recommendations after all upgrades to reflect new changes.
If you'd like to incorporate missing meta fields into your recommendations, you can do so by enabling the setting "Count missing meta fields as recommendations" via the Admin -> SEO -> Advanced Settings page.
The Webmaster Tools page now has more accurate descriptions with links to integrate the various services, such as Pinterest, Bing, Google Search Console, etc.