Prepare for 0.5.8

Change-Id: I7a0f4620b5d66faff25c396d5441dec63a262062
diff --git a/DESCRIPTION b/DESCRIPTION
index abf67e8..e227ebb 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: RKorAPClient
 Type: Package
 Title: 'KorAP' Web Service Client Package
-Version: 0.5.7
+Version: 0.5.7.9001
 Authors@R:
     c(person(given = "Marc",
              family = "Kupietz",