3.0.0-beta3

style: Prefer ?? over no-op foo ? foo : bar
Enhance attendee parameter validation
Improve date handling in getDate method
Update Wbxml.php
Refactor attribute assignment logic in Base.php
Update Sync.php
Update message class handling in Importer.php
Change folder deletion origin to PIM
Remove duplicate endTag call
Merge pull request #34 from horde/fix/Modern_iOS_Notes_Multiplexing
Update DeviceTest.php
Update iOS note multiflex behaviour in Device.php
Refactor ensureUtf8 to handle exceptions and improve logic
Enhance PING request collection handling
Refactor collection sync and pingable logic
Handle orphan collections during PING in ActiveSync
Add version check for hierarchy requirement
Add hierarchy check before polling for changes
Request FolderSync if no hierarchy sync key found
Merge pull request #31 from horde/fix/duplicate_syncKey
Add TODO for switching to DI PSR-3 Logger
Refactor sync state saving logic
refactor: Use PSR-4 version of horde/compress
chore: Update workflow dependency
Fix typo in Exception.php for AIRSYNCBASE_LOCATION