Improve handling of C2 #in frames serialization

Change-Id: I8695d8378a17c0e66970fdd00bb8f189b883385c
diff --git a/Changes b/Changes
index 8879cc9..7d63f83 100644
--- a/Changes
+++ b/Changes
@@ -1,6 +1,8 @@
 0.62.3 2024-04-16
     - [cleanup] Added getDocBitsSupplier to VirtualCorpusFilter (margaretha)
     - [feature] Make VC cache location customizable (margaretha)
+    - [bugfix] Improve handling of C2 #IN frames serialization
+      (diewald)
 
 0.62.2 2024-02-20
     - [feature] Support MMap directory parameters directly