Use kotlin bom

src/main/resources/starter/pom/@dependencies.twig

@@ -2,7 +2,6 @@
     <dependency>
         <groupId>org.jetbrains.kotlin</groupId>
         <artifactId>kotlin-stdlib-jdk8</artifactId>
-        <version>${kotlin.version}</version>
     </dependency>
 {% for dep in dependencies %}
     <dependency>

src/main/resources/starter/pom/@dependencyManagement.twig

@@ -0,0 +1,11 @@
+<dependencyManagement>
+    <dependencies>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-bom</artifactId>
+            <version>${kotlin.version}</version>
+            <type>pom</type>
+            <scope>import</scope>
+        </dependency>
+    </dependencies>
+</dependencyManagement>

src/main/resources/starter/pom/index.twig

@@ -11,7 +11,7 @@
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <main.class>{{ basePackage }}/{{ name | lower | capitalize }}Kt</main.class>
+        <main.class>{{ basePackage }}.{{ name | lower | capitalize }}Kt</main.class>
         <!-- versions -->
         {% for version in versions %}
             <{{version.name}}.version>{{version.value}}</{{version.name}}.version>
@@ -23,6 +23,8 @@
 
     {% include "starter/pom/@repositories" %}
 
+    {% include "starter/pom/@dependencyManagement" %}
+
     {% include "starter/pom/@plugins" %}
 
 </project>