Improve support for text siglen including underscore

Change-Id: I86204f2aae32834e1592335dca83f40cbf46f559
diff --git a/Changes b/Changes
index 63f3079..c6c3553 100644
--- a/Changes
+++ b/Changes
@@ -1,3 +1,7 @@
+0.48 2022-11-10
+        - Improve support for text siglen including
+          underscore in corpus parts.
+
 0.47 2022-08-08
         - Support for preferred language transformation.
         - Support for NKJP taxonomies.