fix things for real.. i think ?

build.gradle

@@ -1,17 +1,15 @@
 buildscript {
-    ext.kotlin_version = '1.2.21'
     repositories {
         jcenter()
         maven { url = "http://files.minecraftforge.net/maven" }
         mavenCentral()
     }
     dependencies {
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         classpath 'net.minecraftforge.gradle:ForgeGradle:2.3-SNAPSHOT'
     }
 }
 plugins {
-    id "org.jetbrains.kotlin.jvm" version "1.2.20"
+    id "org.jetbrains.kotlin.jvm" version '1.2.21'
     id "com.github.johnrengelman.shadow" version "1.2.4"
     id 'idea'
 }

core/build.gradle

@@ -19,6 +19,8 @@ repositories {
 
 dependencies {
     compile 'org.apache.httpcomponents:httpclient:4.3.3'
+    compile 'commons-logging:commons-logging:1.1.3'
+    compile group: "org.apache.logging.log4j", name: "log4j-api", version: '2.8.1'
     compile 'com.google.code.gson:gson:2.8.0'
     compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
 }