Update NKJP annotation assistant

Change-Id: Ie000b3708aefe1fe453e4c79fae2c9500749f80b
diff --git a/Changes b/Changes
index 271d991..f47c190 100755
--- a/Changes
+++ b/Changes
@@ -1,3 +1,6 @@
+0.50 2023-03-27
+        - Improvement of NKJP-annotation helper. (diewald)
+
 0.49 2023-02-23
         - Introduce conllu2korapxml command via plugin. (diewald)
         - Introduce korapxml2conllu command via plugin. (diewald)