Updated dependencies and removed Kotlin EAP dependencies and repositories

Author: magneticflux-

build.gradle

@@ -1,15 +1,14 @@
 buildscript {
-    ext.kotlin_version = '1.2.20'
+    ext.kotlin_version = '1.2.21'
     ext.spek_version = '1.1.5'
 
     repositories {
         jcenter()
-        maven { url 'https://dl.bintray.com/kotlin/kotlin-eap' }
     }
     dependencies {
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
-        classpath "org.jetbrains.dokka:dokka-gradle-plugin:0.9.16-eap-2"
-        classpath 'org.junit.platform:junit-platform-gradle-plugin:1.1.0-M1'
+        classpath "org.jetbrains.dokka:dokka-gradle-plugin:0.9.16"
+        classpath 'org.junit.platform:junit-platform-gradle-plugin:1.1.0'
     }
 }
 
@@ -18,8 +17,8 @@ plugins {
     id 'jacoco'
     id 'maven-publish'
     id 'com.jfrog.bintray' version '1.8.0'
-    id 'org.shipkit.java' version '1.0.7'
-    id 'com.diffplug.gradle.spotless' version '3.8.0'
+    id 'org.shipkit.java' version '2.0.2'
+    id 'com.diffplug.gradle.spotless' version '3.10.0'
     id 'com.github.ben-manes.versions' version '0.17.0'
 }
 
@@ -31,7 +30,6 @@ group 'com.github.magneticflux'
 
 repositories {
     jcenter()
-    maven { url 'https://dl.bintray.com/kotlin/kotlin-eap' }
     maven { url 'http://dl.bintray.com/jetbrains/spek' }
 }
 
@@ -106,4 +104,4 @@ jacocoTestReport {
         }
     }
 }
-check.dependsOn(jacocoTestReport)
+check.dependsOn(jacocoTestReport)