[maven-release-plugin] prepare release wollmux-18.2.0-alpha1

Author: Jenkins

pom.xml

@@ -2,7 +2,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>de.muenchen</groupId>
   <artifactId>wollmux</artifactId>
-  <version>18.2.0-SNAPSHOT</version>
+  <version>18.2.0~alpha1</version>
   <name>WollMux</name>
 
   <properties>
@@ -21,7 +21,7 @@
 
   <scm>
     <developerConnection>scm:git:https://github.com/WollMux/WollMux.git</developerConnection>
-    <tag>HEAD</tag>
+    <tag>wollmux-18.2.0-alpha1</tag>
   </scm>
 
   <repositories>