Introduce attachement mechanism

Change-Id: I8e3bca30ef051b5021ffc15b6157e25e37dd9da9
diff --git a/Changes b/Changes
index e54e88c..910ce3d 100644
--- a/Changes
+++ b/Changes
@@ -1,3 +1,6 @@
+0.58.3 2018-12-12
+    - [feature] Introduced attachements as meta data fields (diewald).
+
 0.58.2 2018-12-05
     - [bugfix] Fixed the candidate list in NextSpans, see de.ids_mannheim.
       korap.index.TestNextIndex.testNextExpansionBug() (margaretha)