update commons, kotlin, gradle

app/build.gradle

@@ -32,12 +32,12 @@ android {
 }
 
 dependencies {
-    compile 'com.simplemobiletools:commons:2.16.3'
+    compile 'com.simplemobiletools:commons:2.20.1'
     compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
 }
 
 buildscript {
-    ext.kotlin_version = '1.1.1'
+    ext.kotlin_version = '1.1.2-5'
     repositories {
         mavenCentral()
     }

build.gradle

@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.1'
+        classpath 'com.android.tools.build:gradle:2.3.3'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files