Android Build Gradle faster build configs. Based on https://developer.android.com/studio/build/optimize-your-build.html

build.gradle.js

productFlavors {

        dev {
            // To avoid using legacy multidex, set minSdkVersion to 21 or higher.
            minSdkVersion 21

            // The following configuration limits the "dev" flavor to using
            // English string resources and xxhdpi screen-density resources.
            resConfigs "en", "xxxhdpi"

            // Disable Crashlytics for your debug builds
            // If you don't need to run a Crashlytics report, speed up your debug builds by disabling the plugin
            //ext.enableCrashlytics = false

            // To prevent Crashlytics from constantly updating its build ID
            ext.alwaysUpdateBuildId = false

            versionName defaultConfig.versionName + "-dev"
        }