Fixed ensuring same documents of spans (solved #87)

Change-Id: I603db8dce99a36a430a47ca6188457573c7a096e
diff --git a/pom.xml b/pom.xml
index 22dc3ed..3198f40 100644
--- a/pom.xml
+++ b/pom.xml
@@ -35,7 +35,7 @@
 
   <groupId>de.ids_mannheim.korap</groupId>
   <artifactId>Krill</artifactId>
-  <version>0.61.0</version>
+  <version>0.61.1</version>
   <packaging>jar</packaging>
 
   <name>Krill</name>