use kotlin 1.3.50 and BOM, restructure pom, fixes #8

Author: jangalinski

kotlin/pom.xml

@@ -18,16 +18,17 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
+
+    <name>Axon Framework - Kotlin Extension</name>
+    <description>Module for the Kotlin Extension of Axon Framework</description>
+
     <parent>
         <groupId>org.axonframework.extensions.kotlin</groupId>
         <artifactId>axon-kotlin-parent</artifactId>
         <version>0.0.1-SNAPSHOT</version>
     </parent>
 
     <artifactId>axon-kotlin</artifactId>
-    <version>0.0.1-SNAPSHOT</version>
-    <name>Axon Framework Kotlin Extension</name>
-    <description>Module for the Kotlin Extension of Axon Framework</description>
 
     <dependencies>
         <dependency>