This version fixes the compatibility issue with XenForo built-in spam checking system. Previously, the product would activate the content and make it visible even if it didn't pass spam check at the time of creation. Now the content will remain moderated until moderators approve it. This should also work with other products that force moderated status for a thread or post created by a guest.
In this version, we have implemented the major feature discussed here - quick registration workflow. When the option is enabled, guests are asked to provide their email address instead of a username when they are trying to post a thread/post. Immediately after the content is posted, they will get an email address asking them to register to activate their content. They will, however, be able to register using usual links on your forum (and the links provided in the notification), but in this case "quick registration" options will not apply. But if they follow the link in the email, they will see their email pre-filled in the registration page, and, optionally, they can skip filling-in human verification again. Admins can also disable email confirmation for users, who followed the link from their email (and those, actually confirmed their email already). If users choose to change the email after landing on register page, they still have to pass human verification and email confirmation as per usual board configuration.
The product also allows admins to configure the time the content posted by guests should remain in the database if the guest did not end up registering on forums. They can also configure, how long the content should stay in the database, if guests register an account, but do not verify their email address.
There is a reminder email sent to users, who posted some content but did not register yet. The time after which the reminder should be sent is configurable in product's options page.
We have also added an option, to specify forum IDs, where the product should be disabled. This allows you to disable it in private nodes (e.g. admin-only forums) so guests cannot create threads there.
With this version, we also started writing automated tests for the product, and have up to 90% of all workflow tested and verified to work as expected. This should increase product stability and decrease the number of bugs in it.
Here is the next release, that optimizes moderation queue usage in the product. Guest-posted threads/replies will not be any more added to the moderation queue. The threads awaiting for registration will not be visible in the thread list to moderators at all and will be listed only if the user registers.
We have also modified the way unregistered/unconfirmed users are handled. If a user does not register within an hour, their thread/post is deleted. If a user registers, but does not confirm the email address (most likely meaning a spammy registration from a non-real email address), their thread/post and user account gets deleted after 24 hours.