Replace getDownloadLink with getRedirect for redirect device
Fix device detection for Android 10
Just check that JSON is available
Messages for redirect devices do not seem possible
More sensible JSON check for development server
Use the external php-cat-client library
Refactor CAT client and pass Phan and Psalm
mobileconfig12 is without dash in the CAT api
Prevent guessing device when User Agent is hidden
The installation script was changed to a Python script
Add support for User-Agent Client Hints
Prevent empty instruction paragraphs
Add user agents for newer OSes
Avoid a notification for unset GET variable