Update version and fix BG color of drop down menus

Change-Id: Ia34924d90eb5ddad2ed9ced9d0026c678ec7adea
diff --git a/Changes b/Changes
index 2d19511..f4b7bcc 100755
--- a/Changes
+++ b/Changes
@@ -1,3 +1,6 @@
+0.34 2019-04-02
+        - Introduced guided tour (hebasta, #19)
+
 0.33 2019-03-28
         - Fix problem with serialization and deserialization
           of large numerical values (#87).