Bump version to 0.4.0 for change in frequencyQuery result tibble

tokens -> total

Change-Id: I3fb45a75d0c7863c265a93181d8daa5b3dda8965
diff --git a/DESCRIPTION b/DESCRIPTION
index e426cc3..480a713 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: RKorAPClient
 Type: Package
 Title: KorAP Web Service Client Package
-Version: 0.3.0
+Version: 0.4.0
 Author: KorAP-Team @ IDS Mannheim
 Maintainer: KorAP-Team <korap@ids-mannheim.de>
 Description: A simple package that makes KorAP's web serice API accessible from R.