January 2019 update
Most of the recent updates have been reorganising/refactoring the code rather than new user-facing features. We've added a new "Controller" system similar to other frameworks like Laravel or CodeIgniter, where URLs like 'user/{str}' for the user profile are mapped to a function like \Q2A\Controllers\User\UserProfile::profile(). This adds a bit more flexibility to URLs and allows for new features like changing the user profile URL structure.
I've also added new database classes, DbConnection and DbResult which use PDO (built-in PHP database library). This has built-in "parameterised queries" which is a simpler system than current queries. There's also a "Service" system so using the database is quite easy and you can chain some commands:
$postList = qa_service('database')->query('SELECT * FROM ^posts WHERE id=?', array($id))->fetchAllAssoc();
Thanks to pupi1985 who helped with a few key parts of the above like adding support for WHERE...IN queries. And Spudley who has contributed a few other refactorings for emails and the recalc system.