Update CHANGELOG-2.0.md

CHANGELOG-2.0.md

@@ -11,6 +11,7 @@
     6. In v1.x, the proxy class that created by the DI container is a subclass of the target class, this mechanism will cause the magic constant will return the value of proxy class but not original class, such as `__CLASS__`. But now, in v2.0, the proxy class will keep the same structure with the original class, will not change the class name or the class structure.
     7. In v1.x, the proxy class will not re-generate when the proxy file exists even the code of the proxy class changed, this strategy will improve the time-consuming of scan, but at the same time, this will lead to a certain degree of development inconvenience. And now, in v2.0, the file cache of proxy class will generated according to the code content of the proxy class, this changes will reduces the mental burden of development.
     8. Add `priority` parameter for Aspect, now you could define `priority` in Aspect class by class property or annotation property, to manage the order of the aspects.
+    9. In v1.x, you can only define an Aspect class by `@Aspect` annotation, you cannot define the Aspect class by configuration file. But now, in v2.0, it is available to define the Aspect class by configuration file or ConfigProvider.
     
 ## Dependencies Upgrade