[maven-release-plugin] prepare for next development iteration
diff --git a/cassandra/pom.xml b/cassandra/pom.xml
index 3c6e54b..20c6904 100644
--- a/cassandra/pom.xml
+++ b/cassandra/pom.xml
@@ -13,7 +13,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-cassandra</artifactId>
diff --git a/core/pom.xml b/core/pom.xml
index 63c7c50..a01549f 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-core</artifactId>
diff --git a/couchdb/pom.xml b/couchdb/pom.xml
index cfa8804..6024799 100644
--- a/couchdb/pom.xml
+++ b/couchdb/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-couchdb</artifactId>
diff --git a/csv/pom.xml b/csv/pom.xml
index 3c6be39..e97c580 100644
--- a/csv/pom.xml
+++ b/csv/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-csv</artifactId>
diff --git a/dynamodb/pom.xml b/dynamodb/pom.xml
index 33ba7ae..31e0405 100644
--- a/dynamodb/pom.xml
+++ b/dynamodb/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-dynamodb</artifactId>
diff --git a/elasticsearch/common/pom.xml b/elasticsearch/common/pom.xml
index 150431e..d763127 100644
--- a/elasticsearch/common/pom.xml
+++ b/elasticsearch/common/pom.xml
@@ -13,7 +13,7 @@
 	<parent>
 		<artifactId>MetaModel-elasticsearch</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 
diff --git a/elasticsearch/native/pom.xml b/elasticsearch/native/pom.xml
index 310f11c..14cab9d 100644
--- a/elasticsearch/native/pom.xml
+++ b/elasticsearch/native/pom.xml
@@ -13,7 +13,7 @@
 	<parent>
 		<artifactId>MetaModel-elasticsearch</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 
diff --git a/elasticsearch/pom.xml b/elasticsearch/pom.xml
index a3d749b..3688423 100644
--- a/elasticsearch/pom.xml
+++ b/elasticsearch/pom.xml
@@ -13,7 +13,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-elasticsearch</artifactId>
diff --git a/elasticsearch/rest/pom.xml b/elasticsearch/rest/pom.xml
index c747e5d..278a181 100644
--- a/elasticsearch/rest/pom.xml
+++ b/elasticsearch/rest/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<artifactId>MetaModel-elasticsearch</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 
 	<modelVersion>4.0.0</modelVersion>
diff --git a/excel/pom.xml b/excel/pom.xml
index 146db76..d38dfca 100644
--- a/excel/pom.xml
+++ b/excel/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-excel</artifactId>
diff --git a/fixedwidth/pom.xml b/fixedwidth/pom.xml
index 26ec68d..cf97c39 100644
--- a/fixedwidth/pom.xml
+++ b/fixedwidth/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-fixedwidth</artifactId>
diff --git a/full/pom.xml b/full/pom.xml
index 2fc93ec..21575e9 100644
--- a/full/pom.xml
+++ b/full/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-full</artifactId>
diff --git a/hadoop/pom.xml b/hadoop/pom.xml
index ab113ba..77395ff 100644
--- a/hadoop/pom.xml
+++ b/hadoop/pom.xml
@@ -13,7 +13,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-hadoop</artifactId>
diff --git a/hbase/pom.xml b/hbase/pom.xml
index bdf6afa..23a0877 100644
--- a/hbase/pom.xml
+++ b/hbase/pom.xml
@@ -13,7 +13,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-hbase</artifactId>
diff --git a/jdbc/pom.xml b/jdbc/pom.xml
index f492bc3..9e664b6 100644
--- a/jdbc/pom.xml
+++ b/jdbc/pom.xml
@@ -13,7 +13,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-jdbc</artifactId>
diff --git a/json/pom.xml b/json/pom.xml
index bf61f3f..19aec3a 100644
--- a/json/pom.xml
+++ b/json/pom.xml
@@ -13,7 +13,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-json</artifactId>
diff --git a/kafka/pom.xml b/kafka/pom.xml
index 10c8567..b7810bc 100644
--- a/kafka/pom.xml
+++ b/kafka/pom.xml
@@ -13,7 +13,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-kafka</artifactId>
diff --git a/mongodb/common/pom.xml b/mongodb/common/pom.xml
index 515cf97..1458b62 100644
--- a/mongodb/common/pom.xml
+++ b/mongodb/common/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<artifactId>MetaModel-mongodb</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-mongodb-common</artifactId>
diff --git a/mongodb/mongo2/pom.xml b/mongodb/mongo2/pom.xml
index db9148a..e6449e2 100644
--- a/mongodb/mongo2/pom.xml
+++ b/mongodb/mongo2/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<artifactId>MetaModel-mongodb</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-mongodb-mongo2</artifactId>
diff --git a/mongodb/mongo3/pom.xml b/mongodb/mongo3/pom.xml
index d540df5..3a4efd6 100644
--- a/mongodb/mongo3/pom.xml
+++ b/mongodb/mongo3/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<artifactId>MetaModel-mongodb</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-mongodb-mongo3</artifactId>
diff --git a/mongodb/pom.xml b/mongodb/pom.xml
index 888489c..020a8dc 100644
--- a/mongodb/pom.xml
+++ b/mongodb/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-mongodb</artifactId>
diff --git a/neo4j/pom.xml b/neo4j/pom.xml
index d3bd131..a9c2f2a 100644
--- a/neo4j/pom.xml
+++ b/neo4j/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-neo4j</artifactId>
diff --git a/openoffice/pom.xml b/openoffice/pom.xml
index f2dfbe8..94b1276 100644
--- a/openoffice/pom.xml
+++ b/openoffice/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-openoffice</artifactId>
diff --git a/pojo/pom.xml b/pojo/pom.xml
index 06558c5..096bed7 100644
--- a/pojo/pom.xml
+++ b/pojo/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-pojo</artifactId>
diff --git a/pom.xml b/pom.xml
index 649fbcb..37220d5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -44,11 +44,11 @@
 		<url>https://git-wip-us.apache.org/repos/asf?p=metamodel.git</url>
 		<connection>scm:git:http://git-wip-us.apache.org/repos/asf/metamodel.git</connection>
 		<developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/metamodel.git</developerConnection>
-		<tag>MetaModel-5.1.0</tag>
+		<tag>HEAD</tag>
 	</scm>
 	<groupId>org.apache.metamodel</groupId>
 	<artifactId>MetaModel</artifactId>
-	<version>5.1.0</version>
+	<version>5.1.1-SNAPSHOT</version>
 	<name>MetaModel</name>
 	<description>MetaModel is a library that encapsulates the differences and enhances 
 		the capabilities of different datastores. Rich querying abilities are
diff --git a/salesforce/pom.xml b/salesforce/pom.xml
index 9075e74..758efb3 100644
--- a/salesforce/pom.xml
+++ b/salesforce/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-salesforce</artifactId>
diff --git a/spring/pom.xml b/spring/pom.xml
index b43fd38..b15dfc3 100644
--- a/spring/pom.xml
+++ b/spring/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-spring</artifactId>
diff --git a/sugarcrm/pom.xml b/sugarcrm/pom.xml
index 1109c70..cf16faf 100644
--- a/sugarcrm/pom.xml
+++ b/sugarcrm/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-sugarcrm</artifactId>
diff --git a/xml/pom.xml b/xml/pom.xml
index c12f826..72c7232 100644
--- a/xml/pom.xml
+++ b/xml/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<artifactId>MetaModel</artifactId>
 		<groupId>org.apache.metamodel</groupId>
-		<version>5.1.0</version>
+		<version>5.1.1-SNAPSHOT</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>MetaModel-xml</artifactId>