update changelog

CHANGELOG.md

@@ -8,6 +8,8 @@
   - Note that although it works in the Java embeddings within aspects, it does *not* work in "real" Java classes.
   - Please use this feature with caution. As with most refactoring tools, it is quite fragile and won't give correct
     results in all cases.
+- Folding support for aspect files.
+  - Aspects and most blocks now can be folded.
 
 ### Changed