[TASK] Add TYPO3 8 drop to extension README.md

README.md

@@ -8,7 +8,7 @@ Repository: https://gitlab.sgalinski.de/typo3/sg_youtube
 
 Please report bugs here: https://gitlab.sgalinski.de/typo3/sg_youtube
 
-TYPO3 version: >8.7
+TYPO3 version: >9.5
 
 ## Installation / Integration
 
@@ -27,3 +27,7 @@ plugin.tx_sgyoutube {
 	}
 }
 ```
+
+## Version 3 to 4 changes
+
+- Dropped TYPO3 8 support