MailWizz - Email Marketing Application 2.6.6

[ENH] - When using queue tables, check if subscribers still exists and if they have the right status. If not, remove them from queue table
[BUG] - Passing an integer for strpos when it needs a string
[MSC] - Overall fixes
[UPD] - Updated composer packages

[ENH] - HTMLPurifier allow more attributes(flex-direction, align-items) and attribute values(for width, height and display)
[ADD] - Added AI Assistant which is a chat extension to help with daily marketing tasks. It is an integration with OpenAI's ChatGPT.
[CHG] - When a Warmup plan finishes, we do not set the quota to zero. Last plan schedule quota will remain set on the delivery server.
[BUG] - Tracking redirect would fail when MailWizz would be installed in a subfolder and tracking domains would be used
[ENH] - API access by IP now allows ranges as well. Added proper info in tooltips as well.
[MSC] - Overall fixes
[UPD] - Updated composer packages

[MSC] - Overall fixes
[UPD] - Updated composer packages