Option to disable buffering (fix #411)

build.gradle

@@ -5,8 +5,8 @@ buildscript {
         maven { url 'https://maven.fabric.io/public' }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.2'
-        classpath 'com.google.gms:google-services:4.3.2'
+        classpath 'com.android.tools.build:gradle:3.5.3'
+        classpath 'com.google.gms:google-services:4.3.3'
         classpath 'io.fabric.tools:gradle:1.26.1'
     }
 }