Update kotlin, use umd

build.gradle

@@ -1,12 +1,39 @@
-group 'nl.astraeus'
-version '0.1.16-SNAPSHOT'
+buildscript {
+    ext.kotlin_version = '1.3.70'
+    repositories {
+        maven {
+            url "http://nexus.astraeus.nl/nexus/content/groups/public"
+        }
+        mavenCentral()
+    }
+    dependencies {
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
+
+plugins {
+    id("org.jetbrains.kotlin.js") version "1.3.70"
+}
 
-apply plugin: 'kotlin2js'
-apply plugin: 'kotlin-dce-js'
 apply plugin: 'idea'
 apply plugin: 'maven'
 apply plugin: 'maven-publish'
 
+group 'nl.astraeus'
+version '0.1.16-SNAPSHOT'
+
+kotlin {
+    target {
+        browser {
+            webpackTask {
+                output.libraryTarget = "umd"
+            }
+        }
+    }
+}
+
+compileKotlinJs.kotlinOptions.moduleKind = "umd"
+
 idea {
     module {
         name = "komp"
@@ -21,20 +48,7 @@ repositories {
 }
 
 ext {
-    kotlin_version = '1.3.50'
-}
-
-buildscript {
-    ext.kotlin_version = '1.3.50'
-    repositories {
-        maven {
-            url "http://nexus.astraeus.nl/nexus/content/groups/public"
-        }
-        mavenCentral()
-    }
-    dependencies {
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
-    }
+    kotlin_version = '1.3.70'
 }
 
 dependencies {
@@ -56,9 +70,11 @@ uploadArchives {
     }
 }
 
+/*
 compileKotlin2Js {
     kotlinOptions.sourceMap = true
     kotlinOptions.sourceMapEmbedSources = "always"
 
     // remaining configuration options
 }
+*/