Publish v0.5.7

Change-Id: I1c2748a0d47c94335ae4da4e0127ab25d7edea40
diff --git a/DESCRIPTION b/DESCRIPTION
index de9b927..abf67e8 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: RKorAPClient
 Type: Package
 Title: 'KorAP' Web Service Client Package
-Version: 0.5.6.9002
+Version: 0.5.7
 Authors@R:
     c(person(given = "Marc",
              family = "Kupietz",
diff --git a/NEWS.md b/NEWS.md
index d7bbf50..72132f1 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,8 +1,16 @@
-# RKorAPClient 0.5.6.9002
-- Fix some links in Readme.md
-- Introduce continuous integration tests via gh-actions, pulled from [highcharter](https://github.com/jbkunst/highcharter) (thanks @pachamaltese)
-- Remove redundant curl import
-- Fix handling of single queries in highcharter-helper
+# RKorAPClient 0.5.7
+
+## Changes
+- Introduced continuous integration tests via gh-actions, pulled from [highcharter](https://github.com/jbkunst/highcharter) (thanks @pachamaltese)
+
+## Bug Fixes
+- Fixed some links in Readme.md
+- Removed redundant curl import
+- Fixed handling of single query term queries in highcharter-helper that had an empty plot and a warning 
+  ```
+  Unknown or uninitialised column: 'condition'.
+  ```
+  as consequences.
 
 # RKorAPClient 0.5.6
 - Fix some links in Readme.md