Updated Kotlin version to RC

build.gradle

@@ -1,8 +1,7 @@
 buildscript {
-    ext.kotlin_version = '1.4-M2'
+    ext.kotlin_version = '1.4.0-rc'
     repositories {
         mavenCentral()
-        maven { url 'https://dl.bintray.com/kotlin/kotlin-eap' }
     }
     dependencies {
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 #Wed Oct 16 14:03:05 CEST 2019
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.5.1-all.zip
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists