Added back Retrolambda

app/build.gradle

@@ -16,6 +16,7 @@ repositories {
 
 apply plugin: 'android-apt'
 apply plugin: 'realm-android'
+apply plugin: 'me.tatarka.retrolambda'
 
 android {
     compileSdkVersion 26

build.gradle

@@ -7,8 +7,11 @@ buildscript {
         maven { url 'https://maven.google.com' }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.0-beta2'
-        classpath "io.realm:realm-gradle-plugin:3.0.0"
+        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
+        classpath 'com.android.tools.build:gradle:2.3.3'
+        classpath 'io.realm:realm-gradle-plugin:3.0.0'
+        classpath 'me.tatarka:gradle-retrolambda:3.3.1'
+        classpath 'me.tatarka.retrolambda.projectlombok:lombok.ast:0.2.3.a2'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files