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

Author: zipkinci

Diff for: pom.xml

@@ -19,7 +19,7 @@
 
   <groupId>io.zipkin.proto3</groupId>
   <artifactId>zipkin-proto3</artifactId>
-  <version>1.0.0</version>
+  <version>1.0.1-SNAPSHOT</version>
   <packaging>jar</packaging>
 
   <name>zipkin-proto3</name>
@@ -66,7 +66,7 @@
     <url>https://github.com/openzipkin/zipkin-api</url>
     <connection>scm:git:https://github.com/openzipkin/zipkin-api.git</connection>
     <developerConnection>scm:git:https://github.com/openzipkin/zipkin-api.git</developerConnection>
-    <tag>1.0.0</tag>
+    <tag>HEAD</tag>
   </scm>
 
   <!-- Developer section is needed for Maven Central, but doesn't need to include each person -->