Use kohlschutter-parent 1.6.4

Author: kohlschuetter

pom.xml

@@ -8,7 +8,7 @@
     <parent>
         <groupId>com.kohlschutter</groupId>
         <artifactId>kohlschutter-parent-multirelease</artifactId>
-        <version>1.6.4-SNAPSHOT</version>
+        <version>1.6.4</version>
         <relativePath>../kohlschutter-parent/kohlschutter-parent-multirelease/pom.xml</relativePath>
     </parent>
     <name>junixsocket</name>