Improve reader/writer handling (fixes #55)

Change-Id: Ia2e81a211b6a8c0ee7c2de133accfdb1e6bc3bc2
diff --git a/Changes b/Changes
index 23d6a7d..f967ed6 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,5 @@
-0.58.6 2019-05-02
-	- [bugfix] Updated cache loading (fixed #55) (diewald, margaretha)
+0.58.6 2019-05-28
+    - [bugfix] Updated cache loading (fixed #55) (diewald, margaretha)
 
 0.58.5 2019-03-18
     - [bugfix] Fix bug where duplicate keys occured in
@@ -17,7 +17,7 @@
     - [bugfix] Fixed #53 element distance query bug (margaretha)
     - [bugfix] Workaround for #54 failing offsets due to
       surrogate pairs (diewald)
-    - Added isReaderOpen method (margaretha)
+    - [feature] Added isReaderOpen method (margaretha)
 
 0.58.4 2019-02-05
     - [cleanup] Remove deprecated methods setLicense/getLicense,