Bump Version to 0.5.9000

Change-Id: I13fd7a137ead92cd3991fe62ddfdc2c24a6448b9
diff --git a/DESCRIPTION b/DESCRIPTION
index c6f6c11..2a9de67 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: idsThemeR
 Type: Package
 Title: Plot themes for the Leibniz Institute for the German Language (IDS)
-Version: 0.4.900
+Version: 0.5.900
 Authors@R:
     c(person(given = "Marc",
              family = "Kupietz",