Create UPGRADE-3.0.md

Ang3 · Ang3 · commit dde2091b035b · 2023-02-02T02:10:25.000+01:00
diff --git a/UPGRADE-3.0.md b/UPGRADE-3.0.md
@@ -0,0 +1,11 @@
+UPGRADE FROM 2.x to 3.x
+=======================
+
+Binary compatibility break (BC break).
+
+**PHP 8.1 and Symfony 6 minimum**. No additional feature.
+
+PHP
+---
+
+- [x] Type hints.
