Bump version to 0.5.1

Change-Id: Ibdba9ddfd4b11f20782d43cb19d2b1da44dff1c4
diff --git a/DESCRIPTION b/DESCRIPTION
index aaea6c2..2f9abc9 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,11 +1,12 @@
 Package: RKorAPClient
 Type: Package
 Title: KorAP Web Service Client Package
-Version: 0.5.0
+Version: 0.5.1
 Author: KorAP-Team @ IDS Mannheim
 Maintainer: KorAP-Team <korap@ids-mannheim.de>
 Description: A simple package that makes KorAP's web service API accessible from R.
 Depends: R (>= 3.5.0)
+Language: en-US
 License: BSD_2_clause + file LICENSE
 Encoding: UTF-8
 LazyData: false
diff --git a/NEWS.md b/NEWS.md
index cdc89c3..bc650f2 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,3 +1,7 @@
+# RKorAPClient 0.5.1
+- Fixed many typos.
+- Removed redundant and too long running tests.
+
 # RKorAPClient 0.5.0
 
 - Initial release on CRAN.