TASK: Add TYPO3 11 compatibility. TYPO3 10 is still supported, but needs at least PHP 7.4.
TASK: PHP 7.4 - 8.1 compatibility

We have updated over 11.000 lines so please check upgrade notes before upgrading to 8.0.0:
https://docs.typo3.org/p/jweiland/events2/main/en-us/AdministratorManual/Upgrade/Index.html

Please execute the UpgradeWizards in Installtool to migrate columns, fields and Flexform sheets.

You can report issues in EN or DE here: https://github.com/jweiland-net/events2/issues