Update Android Studio to Android 4 alpha 4 w/gradle plugin & Kotlin

build.gradle

@@ -1,11 +1,12 @@
 buildscript {
-    ext.kotlin_version = '1.3.50'
+    ext.kotlin_version = '1.3.61'
     repositories {
         google()
         jcenter()
+        maven { url 'https://dl.bintray.com/kotlin/kotlin-eap' }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.6.0-beta01'
+        classpath 'com.android.tools.build:gradle:4.0.0-alpha04'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 
@@ -36,6 +37,7 @@ repositories {
     jcenter()
     maven { url 'https://github.com/FireZenk/maven-repo/raw/master/' }
     maven { url 'https://jitpack.io' }
+    maven { url 'https://dl.bintray.com/kotlin/kotlin-eap' }
 }
 
 allprojects {
@@ -166,7 +168,7 @@ dependencies {
     implementation 'io.github.silvaren:easyrs:0.5.3'
     implementation 'org.jcodec:jcodec:0.2.5'
     implementation 'org.jcodec:jcodec-android:0.2.5'
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
 
     // Room
     implementation "android.arch.persistence.room:runtime:2.1.0"