[maven-release-plugin] prepare for next development iteration

pom.xml

@@ -4,7 +4,7 @@
 
     <groupId>io.github.grrolland</groupId>
     <artifactId>ngx-distributed-shm</artifactId>
-    <version>1.0.18</version>
+    <version>1.0.19-SNAPSHOT</version>
 
     <name>ngx-distributed-shm</name>
     <description>This projet is memcached like server based on Hazelcast and Vertx. The goals of the project is to build an easy-to-use distributed memory storage with the nginx shared memory semantic for use with lua nginx plugin.</description>
@@ -23,7 +23,7 @@
         <connection>scm:git:[email protected]:grrolland/ngx-distributed-shm.git</connection>
         <developerConnection>scm:git:https://github.com/grrolland/ngx-distributed-shm.git</developerConnection>
         <url>https://github.com/grrolland/ngx-distributed-shm</url>
-        <tag>1.0.18</tag>
+        <tag>HEAD</tag>
     </scm>
 
     <distributionManagement>