Support --quiet flag (fixes #15)

Change-Id: I2675131953f1ac455c85862278df9a702ad5d523
diff --git a/Changes b/Changes
index efd5116..684dd95 100644
--- a/Changes
+++ b/Changes
@@ -1,3 +1,6 @@
+0.52 2023-01-23
+        - Introduced 'quiet' flag.
+
 0.51 2023-12-23
         - Support ICC meta.
         - Fix date handling for years of length < 2.