Causes deprecation notice on PHP 7.4
Doesn't work with older PHPUnit versions.
Add support to 'INSERT INTO ... VALUES $' queries
Fixes #812
Browsers don't move <select> dropdowns when the page shifts. Fixes #808
Fixes #745
Fix mismatch between Q2A and PHPMailer email validation algorithm
Fix database overflow issue when trying to insert content words
Remove bookmark entries about deleted users
