Merge pull request #251 from apache/main_to_6.1.0-SNAPSHOT

Update main ver to 6.1.0-SNAPSHOT

Author: leerho

pom.xml

@@ -25,16 +25,9 @@ under the License.
 
   <modelVersion>4.0.0</modelVersion>
 
-  <!--
-  <parent>
-    <groupId>org.apache</groupId>
-    <artifactId>apache</artifactId>
-    <version>32</version>
-  </parent> -->
-
   <groupId>org.apache.datasketches</groupId>
   <artifactId>datasketches-memory</artifactId>
-  <version>5.1.0-SNAPSHOT</version>
+  <version>6.1.0-SNAPSHOT</version>
   <packaging>jar</packaging>
 
   <name>${project.artifactId}</name>