[maven-release-plugin] prepare release 0.6.0
diff --git a/pom.xml b/pom.xml
index dfb8afb..db05bf2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -28,7 +28,7 @@
 
     <groupId>org.apache.wayang</groupId>
     <artifactId>wayang</artifactId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
     <packaging>pom</packaging>
 
     <name>Apache Wayang</name>
@@ -100,7 +100,7 @@
         <maven.kotlin.skip>false</maven.kotlin.skip>
 
         <!-- Timestamp for the reproducible builds -->
-        <project.build.outputTimestamp>2021-11-03T13:40:53Z</project.build.outputTimestamp>
+        <project.build.outputTimestamp>2021-11-15T04:39:11Z</project.build.outputTimestamp>
 
         <assertj.version>3.17.2</assertj.version>
         <commons-io.version>2.5</commons-io.version>
@@ -175,7 +175,7 @@
                 <dependency>
                     <groupId>org.apache.wayang</groupId>
                     <artifactId>wayang-resources</artifactId>
-                    <version>0.6.0-SNAPSHOT</version>
+                    <version>0.6.0</version>
                     <type>zip</type>
                     <optional>true</optional>
                 </dependency>
diff --git a/wayang-api/pom.xml b/wayang-api/pom.xml
index 4755a8c..c55b4f9 100644
--- a/wayang-api/pom.xml
+++ b/wayang-api/pom.xml
@@ -23,11 +23,11 @@
     <parent>
         <artifactId>wayang</artifactId>
         <groupId>org.apache.wayang</groupId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
 
     <artifactId>wayang-api</artifactId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
     <packaging>pom</packaging>
 
     <name>Wayang API</name>
diff --git a/wayang-api/wayang-api-python/pom.xml b/wayang-api/wayang-api-python/pom.xml
index 9becbb2..e531d9a 100644
--- a/wayang-api/wayang-api-python/pom.xml
+++ b/wayang-api/wayang-api-python/pom.xml
@@ -23,11 +23,11 @@
     <parent>
         <artifactId>wayang-api</artifactId>
         <groupId>org.apache.wayang</groupId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
 
     <artifactId>wayang-api-python</artifactId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
 
     <name>Wayang API Python</name>
     <description>Wayang implementation of an API of Python to be enable to work with code writed in python</description>
diff --git a/wayang-api/wayang-api-scala-java/pom.xml b/wayang-api/wayang-api-scala-java/pom.xml
index 98cbad0..d2a59a2 100644
--- a/wayang-api/wayang-api-scala-java/pom.xml
+++ b/wayang-api/wayang-api-scala-java/pom.xml
@@ -24,11 +24,11 @@
   <parent>
         <artifactId>wayang-api</artifactId>
         <groupId>org.apache.wayang</groupId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
 
     <artifactId>wayang-api-scala-java</artifactId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
 
     <name>Wayang API Scala-Java</name>
     <description>Wayang implementation of an API of Scala-Java to be enable to work in functional style</description>
@@ -42,7 +42,7 @@
             <dependency>
                 <groupId>org.apache.wayang</groupId>
                 <artifactId>wayang-commons</artifactId>
-                <version>0.6.0-SNAPSHOT</version>
+                <version>0.6.0</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>
@@ -53,17 +53,17 @@
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-core</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-basic</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-utils-profile-db</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.commons</groupId>
@@ -73,13 +73,13 @@
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-java</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-sqlite3</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>
diff --git a/wayang-api/wayang-api-scala-java/wayang-api-scala-java_2.11/pom.xml b/wayang-api/wayang-api-scala-java/wayang-api-scala-java_2.11/pom.xml
index 861014e..1a19d8f 100644
--- a/wayang-api/wayang-api-scala-java/wayang-api-scala-java_2.11/pom.xml
+++ b/wayang-api/wayang-api-scala-java/wayang-api-scala-java_2.11/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>wayang-api-scala-java</artifactId>
     <groupId>org.apache.wayang</groupId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
@@ -31,7 +31,7 @@
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-spark_2.11</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
       <scope>test</scope>
     </dependency>
     <dependency>
diff --git a/wayang-api/wayang-api-scala-java/wayang-api-scala-java_2.12/pom.xml b/wayang-api/wayang-api-scala-java/wayang-api-scala-java_2.12/pom.xml
index edc5dd3..954d3b4 100644
--- a/wayang-api/wayang-api-scala-java/wayang-api-scala-java_2.12/pom.xml
+++ b/wayang-api/wayang-api-scala-java/wayang-api-scala-java_2.12/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>wayang-api-scala-java</artifactId>
     <groupId>org.apache.wayang</groupId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
@@ -31,7 +31,7 @@
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-spark_2.12</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
       <scope>test</scope>
     </dependency>
     <dependency>
diff --git a/wayang-benchmark/pom.xml b/wayang-benchmark/pom.xml
index bde6523..a0353a9 100644
--- a/wayang-benchmark/pom.xml
+++ b/wayang-benchmark/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>wayang</artifactId>
     <groupId>org.apache.wayang</groupId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
@@ -32,32 +32,32 @@
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-core</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
     </dependency>
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-basic</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
     </dependency>
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-utils-profile-db</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
     </dependency>
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-java</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
     </dependency>
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-postgres</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
     </dependency>
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-sqlite3</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
     </dependency>
   </dependencies>
 
diff --git a/wayang-benchmark/wayang-benchmark_2.11/pom.xml b/wayang-benchmark/wayang-benchmark_2.11/pom.xml
index 9784513..ece2f4e 100644
--- a/wayang-benchmark/wayang-benchmark_2.11/pom.xml
+++ b/wayang-benchmark/wayang-benchmark_2.11/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>wayang-benchmark</artifactId>
     <groupId>org.apache.wayang</groupId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
@@ -31,12 +31,12 @@
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-api-scala-java_2.11</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
     </dependency>
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-spark_2.11</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
     </dependency>
     <dependency>
       <groupId>org.apache.spark</groupId>
diff --git a/wayang-benchmark/wayang-benchmark_2.12/pom.xml b/wayang-benchmark/wayang-benchmark_2.12/pom.xml
index f678a6f..7ce35e5 100644
--- a/wayang-benchmark/wayang-benchmark_2.12/pom.xml
+++ b/wayang-benchmark/wayang-benchmark_2.12/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>wayang-benchmark</artifactId>
     <groupId>org.apache.wayang</groupId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
@@ -31,12 +31,12 @@
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-api-scala-java_2.12</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
     </dependency>
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-spark_2.12</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
     </dependency>
     <dependency>
       <groupId>org.apache.spark</groupId>
diff --git a/wayang-commons/pom.xml b/wayang-commons/pom.xml
index 9b2a3ed..334b894 100644
--- a/wayang-commons/pom.xml
+++ b/wayang-commons/pom.xml
@@ -23,11 +23,11 @@
     <parent>
         <groupId>org.apache.wayang</groupId>
         <artifactId>wayang</artifactId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
 
     <artifactId>wayang-commons</artifactId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
     <packaging>pom</packaging>
 
     <name>Wayang Commons</name>
diff --git a/wayang-commons/wayang-basic/pom.xml b/wayang-commons/wayang-basic/pom.xml
index 10b1fa5..14b4388 100644
--- a/wayang-commons/wayang-basic/pom.xml
+++ b/wayang-commons/wayang-basic/pom.xml
@@ -23,11 +23,11 @@
     <parent>
         <artifactId>wayang-commons</artifactId>
         <groupId>org.apache.wayang</groupId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
 
     <artifactId>wayang-basic</artifactId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
 
     <name>Wayang Basic</name>
     <description>
@@ -38,12 +38,12 @@
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-core</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-utils-profile-db</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
diff --git a/wayang-commons/wayang-core/pom.xml b/wayang-commons/wayang-core/pom.xml
index 536f97e..b7d69db 100644
--- a/wayang-commons/wayang-core/pom.xml
+++ b/wayang-commons/wayang-core/pom.xml
@@ -23,11 +23,11 @@
     <parent>
         <artifactId>wayang-commons</artifactId>
         <groupId>org.apache.wayang</groupId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
 
     <artifactId>wayang-core</artifactId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
 
     <name>Wayang Core</name>
     <description>
@@ -87,7 +87,7 @@
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-utils-profile-db</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
diff --git a/wayang-commons/wayang-utils-profile-db/pom.xml b/wayang-commons/wayang-utils-profile-db/pom.xml
index 2258ed8..73733e6 100644
--- a/wayang-commons/wayang-utils-profile-db/pom.xml
+++ b/wayang-commons/wayang-utils-profile-db/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>wayang-commons</artifactId>
         <groupId>org.apache.wayang</groupId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/wayang-docs/pom.xml b/wayang-docs/pom.xml
index d5137bd..0704df8 100644
--- a/wayang-docs/pom.xml
+++ b/wayang-docs/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>wayang</artifactId>
         <groupId>org.apache.wayang</groupId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/wayang-platforms/pom.xml b/wayang-platforms/pom.xml
index d6b5580..7eb16f1 100644
--- a/wayang-platforms/pom.xml
+++ b/wayang-platforms/pom.xml
@@ -23,11 +23,11 @@
     <parent>
         <artifactId>wayang</artifactId>
         <groupId>org.apache.wayang</groupId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
 
     <artifactId>wayang-platforms</artifactId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
     <packaging>pom</packaging>
 
     <name>Wayang Platform</name>
@@ -51,7 +51,7 @@
             <dependency>
                 <groupId>org.apache.wayang</groupId>
                 <artifactId>wayang-commons</artifactId>
-                <version>0.6.0-SNAPSHOT</version>
+                <version>0.6.0</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>
diff --git a/wayang-platforms/wayang-flink/pom.xml b/wayang-platforms/wayang-flink/pom.xml
index a8ea7c3..42bd3f9 100644
--- a/wayang-platforms/wayang-flink/pom.xml
+++ b/wayang-platforms/wayang-flink/pom.xml
@@ -24,11 +24,11 @@
   <parent>
         <artifactId>wayang-platforms</artifactId>
         <groupId>org.apache.wayang</groupId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
 
     <artifactId>wayang-flink</artifactId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
 
     <name>Wayang Platform Apache Flink</name>
     <description>
@@ -44,17 +44,17 @@
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-core</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-basic</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-java</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.hadoop</groupId>
diff --git a/wayang-platforms/wayang-flink/wayang-flink_2.11/pom.xml b/wayang-platforms/wayang-flink/wayang-flink_2.11/pom.xml
index 7a8ac16..c5b1ea8 100644
--- a/wayang-platforms/wayang-flink/wayang-flink_2.11/pom.xml
+++ b/wayang-platforms/wayang-flink/wayang-flink_2.11/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>wayang-flink</artifactId>
     <groupId>org.apache.wayang</groupId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
diff --git a/wayang-platforms/wayang-flink/wayang-flink_2.12/pom.xml b/wayang-platforms/wayang-flink/wayang-flink_2.12/pom.xml
index 651d96a..0cfe5c9 100644
--- a/wayang-platforms/wayang-flink/wayang-flink_2.12/pom.xml
+++ b/wayang-platforms/wayang-flink/wayang-flink_2.12/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>wayang-flink</artifactId>
     <groupId>org.apache.wayang</groupId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
diff --git a/wayang-platforms/wayang-giraph/pom.xml b/wayang-platforms/wayang-giraph/pom.xml
index 7e1450b..00b967b 100644
--- a/wayang-platforms/wayang-giraph/pom.xml
+++ b/wayang-platforms/wayang-giraph/pom.xml
@@ -23,11 +23,11 @@
     <parent>
         <artifactId>wayang-platforms</artifactId>
         <groupId>org.apache.wayang</groupId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
 
     <artifactId>wayang-giraph</artifactId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
 
     <name>Wayang Platform Giraph</name>
     <description>
@@ -43,17 +43,17 @@
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-core</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-basic</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-java</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
 
         <dependency>
diff --git a/wayang-platforms/wayang-graphchi/pom.xml b/wayang-platforms/wayang-graphchi/pom.xml
index e6c4ab2..8814c70 100644
--- a/wayang-platforms/wayang-graphchi/pom.xml
+++ b/wayang-platforms/wayang-graphchi/pom.xml
@@ -23,11 +23,11 @@
     <parent>
         <artifactId>wayang-platforms</artifactId>
         <groupId>org.apache.wayang</groupId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
 
     <artifactId>wayang-graphchi_2.11</artifactId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
 
     <name>Wayang Graphchi</name>
     <description>
@@ -49,17 +49,17 @@
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-core</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-basic</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-java</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.hadoop</groupId>
diff --git a/wayang-platforms/wayang-java/pom.xml b/wayang-platforms/wayang-java/pom.xml
index 2a01c4c..82efc84 100644
--- a/wayang-platforms/wayang-java/pom.xml
+++ b/wayang-platforms/wayang-java/pom.xml
@@ -23,11 +23,11 @@
     <parent>
         <artifactId>wayang-platforms</artifactId>
         <groupId>org.apache.wayang</groupId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
 
     <artifactId>wayang-java</artifactId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
 
     <name>Wayang Platform Java</name>
     <description>
@@ -42,13 +42,13 @@
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-core</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
             <scope>provided</scope>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-basic</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.hadoop</groupId>
diff --git a/wayang-platforms/wayang-jdbc-template/pom.xml b/wayang-platforms/wayang-jdbc-template/pom.xml
index b15cd20..7c3976e 100644
--- a/wayang-platforms/wayang-jdbc-template/pom.xml
+++ b/wayang-platforms/wayang-jdbc-template/pom.xml
@@ -23,11 +23,11 @@
     <parent>
         <artifactId>wayang-platforms</artifactId>
         <groupId>org.apache.wayang</groupId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
 
     <artifactId>wayang-jdbc-template</artifactId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
 
     <name>Wayang Platform JDBC Template</name>
     <description>
@@ -44,7 +44,7 @@
             <dependency>
                 <groupId>org.apache.wayang</groupId>
                 <artifactId>wayang-commons</artifactId>
-                <version>0.6.0-SNAPSHOT</version>
+                <version>0.6.0</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>
@@ -55,17 +55,17 @@
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-core</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-basic</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-java</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.hsqldb</groupId>
diff --git a/wayang-platforms/wayang-postgres/pom.xml b/wayang-platforms/wayang-postgres/pom.xml
index 3186c5e..4e88697 100644
--- a/wayang-platforms/wayang-postgres/pom.xml
+++ b/wayang-platforms/wayang-postgres/pom.xml
@@ -23,11 +23,11 @@
     <parent>
         <artifactId>wayang-platforms</artifactId>
         <groupId>org.apache.wayang</groupId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
 
     <artifactId>wayang-postgres</artifactId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
 
     <name>Wayang Platform Postgres</name>
     <description>
@@ -48,12 +48,12 @@
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-basic</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-jdbc-template</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
     </dependencies>
 
diff --git a/wayang-platforms/wayang-spark/pom.xml b/wayang-platforms/wayang-spark/pom.xml
index 9891442..7afadfd 100644
--- a/wayang-platforms/wayang-spark/pom.xml
+++ b/wayang-platforms/wayang-spark/pom.xml
@@ -24,11 +24,11 @@
   <parent>
         <artifactId>wayang-platforms</artifactId>
         <groupId>org.apache.wayang</groupId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
 
     <artifactId>wayang-spark</artifactId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
 
     <name>Wayang Platform Spark</name>
     <description>
@@ -44,18 +44,18 @@
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-core</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-basic</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <!-- wayang-java is required to allow for direct communication between spark and java -->
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-java</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.xerial.snappy</groupId>
diff --git a/wayang-platforms/wayang-spark/wayang-spark_2.11/pom.xml b/wayang-platforms/wayang-spark/wayang-spark_2.11/pom.xml
index 27a80eb..227b13b 100644
--- a/wayang-platforms/wayang-spark/wayang-spark_2.11/pom.xml
+++ b/wayang-platforms/wayang-spark/wayang-spark_2.11/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>wayang-spark</artifactId>
     <groupId>org.apache.wayang</groupId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
@@ -32,7 +32,7 @@
       <dependency>
         <groupId>org.apache.wayang</groupId>
         <artifactId>wayang-spark</artifactId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
diff --git a/wayang-platforms/wayang-spark/wayang-spark_2.12/pom.xml b/wayang-platforms/wayang-spark/wayang-spark_2.12/pom.xml
index 4d3d71d..438d9d9 100644
--- a/wayang-platforms/wayang-spark/wayang-spark_2.12/pom.xml
+++ b/wayang-platforms/wayang-spark/wayang-spark_2.12/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>wayang-spark</artifactId>
     <groupId>org.apache.wayang</groupId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
diff --git a/wayang-platforms/wayang-sqlite3/pom.xml b/wayang-platforms/wayang-sqlite3/pom.xml
index 1a15b1f..6b7a0a1 100644
--- a/wayang-platforms/wayang-sqlite3/pom.xml
+++ b/wayang-platforms/wayang-sqlite3/pom.xml
@@ -23,11 +23,11 @@
     <parent>
         <artifactId>wayang-platforms</artifactId>
         <groupId>org.apache.wayang</groupId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
 
     <artifactId>wayang-sqlite3</artifactId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
 
     <name>Wayang Platform SQLite3</name>
     <description>
@@ -44,17 +44,17 @@
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-core</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-basic</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-jdbc-template</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.xerial</groupId>
diff --git a/wayang-plugins/pom.xml b/wayang-plugins/pom.xml
index 7178326..e2ceb24 100644
--- a/wayang-plugins/pom.xml
+++ b/wayang-plugins/pom.xml
@@ -23,11 +23,11 @@
     <parent>
         <artifactId>wayang</artifactId>
         <groupId>org.apache.wayang</groupId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
 
     <artifactId>wayang-plugins</artifactId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
     <packaging>pom</packaging>
 
     <name>Wayang Extensions</name>
diff --git a/wayang-plugins/wayang-iejoin/pom.xml b/wayang-plugins/wayang-iejoin/pom.xml
index a4ab701..ea0b220 100644
--- a/wayang-plugins/wayang-iejoin/pom.xml
+++ b/wayang-plugins/wayang-iejoin/pom.xml
@@ -17,11 +17,11 @@
     <parent>
         <artifactId>wayang-plugins</artifactId>
         <groupId>org.apache.wayang</groupId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
 
     <artifactId>wayang-iejoin</artifactId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
 
     <properties>
         <java-module-name>org.apache.wayang.extensions.iejoin</java-module-name>
@@ -31,17 +31,17 @@
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-core</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-basic</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-java</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
     </dependencies>
 
diff --git a/wayang-plugins/wayang-iejoin/wayang-iejoin_2.11/pom.xml b/wayang-plugins/wayang-iejoin/wayang-iejoin_2.11/pom.xml
index 810af13..b0679e3 100644
--- a/wayang-plugins/wayang-iejoin/wayang-iejoin_2.11/pom.xml
+++ b/wayang-plugins/wayang-iejoin/wayang-iejoin_2.11/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>wayang-iejoin</artifactId>
     <groupId>org.apache.wayang</groupId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
@@ -31,7 +31,7 @@
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-spark_2.11</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
     </dependency>
     <dependency>
       <groupId>org.apache.spark</groupId>
diff --git a/wayang-plugins/wayang-iejoin/wayang-iejoin_2.12/pom.xml b/wayang-plugins/wayang-iejoin/wayang-iejoin_2.12/pom.xml
index 2f49376..71aaac0 100644
--- a/wayang-plugins/wayang-iejoin/wayang-iejoin_2.12/pom.xml
+++ b/wayang-plugins/wayang-iejoin/wayang-iejoin_2.12/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>wayang-iejoin</artifactId>
     <groupId>org.apache.wayang</groupId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
@@ -31,7 +31,7 @@
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-spark_2.12</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
     </dependency>
     <dependency>
       <groupId>org.apache.spark</groupId>
diff --git a/wayang-profiler/pom.xml b/wayang-profiler/pom.xml
index bf9fd3a..fd31247 100644
--- a/wayang-profiler/pom.xml
+++ b/wayang-profiler/pom.xml
@@ -24,11 +24,11 @@
     <parent>
         <artifactId>wayang</artifactId>
         <groupId>org.apache.wayang</groupId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
 
     <artifactId>wayang-profiler</artifactId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
 
     <name>Wayang Profiler</name>
     <description>Wayang Profiler allow to know the weight of each operator</description>
@@ -42,7 +42,7 @@
             <dependency>
                 <groupId>org.apache.wayang</groupId>
                 <artifactId>wayang-commons</artifactId>
-                <version>0.6.0-SNAPSHOT</version>
+                <version>0.6.0</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>
@@ -58,22 +58,22 @@
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-java</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-postgres</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-sqlite3</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-utils-profile-db</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
         </dependency>
     </dependencies>
 
diff --git a/wayang-profiler/wayang-profiler_2.11/pom.xml b/wayang-profiler/wayang-profiler_2.11/pom.xml
index 6825181..d917264 100644
--- a/wayang-profiler/wayang-profiler_2.11/pom.xml
+++ b/wayang-profiler/wayang-profiler_2.11/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>wayang-profiler</artifactId>
     <groupId>org.apache.wayang</groupId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
@@ -31,7 +31,7 @@
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-spark_2.11</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
     </dependency>
     <dependency>
       <groupId>org.apache.spark</groupId>
@@ -46,7 +46,7 @@
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-graphchi_2.11</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
       <scope>test</scope>
     </dependency>
     <dependency>
diff --git a/wayang-profiler/wayang-profiler_2.12/pom.xml b/wayang-profiler/wayang-profiler_2.12/pom.xml
index 0371486..c68a9ed 100644
--- a/wayang-profiler/wayang-profiler_2.12/pom.xml
+++ b/wayang-profiler/wayang-profiler_2.12/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>wayang-profiler</artifactId>
     <groupId>org.apache.wayang</groupId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
@@ -31,7 +31,7 @@
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-spark_2.12</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
     </dependency>
     <dependency>
       <groupId>org.apache.spark</groupId>
diff --git a/wayang-resources/pom.xml b/wayang-resources/pom.xml
index 861a723..deec301 100644
--- a/wayang-resources/pom.xml
+++ b/wayang-resources/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>wayang</artifactId>
         <groupId>org.apache.wayang</groupId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/wayang-tests-integration/pom.xml b/wayang-tests-integration/pom.xml
index 085bf94..f016f88 100644
--- a/wayang-tests-integration/pom.xml
+++ b/wayang-tests-integration/pom.xml
@@ -24,11 +24,11 @@
   <parent>
         <artifactId>wayang</artifactId>
         <groupId>org.apache.wayang</groupId>
-        <version>0.6.0-SNAPSHOT</version>
+        <version>0.6.0</version>
     </parent>
 
     <artifactId>wayang-tests-integration</artifactId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
 
     <name>Wayang Integration Test</name>
     <description>Wayang integration Tests</description>
@@ -44,25 +44,25 @@
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-java</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-sqlite3</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-postgres</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.apache.wayang</groupId>
             <artifactId>wayang-giraph</artifactId>
-            <version>0.6.0-SNAPSHOT</version>
+            <version>0.6.0</version>
             <scope>test</scope>
         </dependency>
 
diff --git a/wayang-tests-integration/wayang-tests-integration_2.11/pom.xml b/wayang-tests-integration/wayang-tests-integration_2.11/pom.xml
index 8f5ff74..cd4a7cc 100644
--- a/wayang-tests-integration/wayang-tests-integration_2.11/pom.xml
+++ b/wayang-tests-integration/wayang-tests-integration_2.11/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>wayang-tests-integration</artifactId>
     <groupId>org.apache.wayang</groupId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
@@ -31,19 +31,19 @@
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-flink_2.11</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
       <scope>test</scope>
     </dependency>
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-spark_2.11</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
       <scope>test</scope>
     </dependency>
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-api-scala-java_2.11</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
       <scope>test</scope>
     </dependency>
 
@@ -91,7 +91,7 @@
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-graphchi_2.11</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
       <scope>test</scope>
     </dependency>
     <dependency>
diff --git a/wayang-tests-integration/wayang-tests-integration_2.12/pom.xml b/wayang-tests-integration/wayang-tests-integration_2.12/pom.xml
index bf39175..9f7dba2 100644
--- a/wayang-tests-integration/wayang-tests-integration_2.12/pom.xml
+++ b/wayang-tests-integration/wayang-tests-integration_2.12/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>wayang-tests-integration</artifactId>
     <groupId>org.apache.wayang</groupId>
-    <version>0.6.0-SNAPSHOT</version>
+    <version>0.6.0</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
@@ -31,19 +31,19 @@
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-flink_2.12</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
       <scope>test</scope>
     </dependency>
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-spark_2.12</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
       <scope>test</scope>
     </dependency>
     <dependency>
       <groupId>org.apache.wayang</groupId>
       <artifactId>wayang-api-scala-java_2.12</artifactId>
-      <version>0.6.0-SNAPSHOT</version>
+      <version>0.6.0</version>
       <scope>test</scope>
     </dependency>