Disable obfuscate in R8 (#222)

app/build.gradle

@@ -48,7 +48,6 @@ android {
         release {
             buildConfigField "boolean", "CRASHLYTICS_ENABLED", "true"
             minifyEnabled true
-            useProguard false
             shrinkResources true
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
             signingConfig signingConfigs.release

app/proguard-rules.pro

@@ -5,6 +5,7 @@
 -dontskipnonpubliclibraryclasses
 -dontskipnonpubliclibraryclassmembers
 -dontpreverify
+-dontobfuscate
 -allowaccessmodification
 -repackageclasses ''
 -verbose

gradle.properties

@@ -11,6 +11,7 @@
 # The setting is particularly useful for tweaking memory settings.
 android.enableJetifier=true
 android.useAndroidX=true
+android.enableR8=true
 org.gradle.jvmargs=-Xmx1536m
 
 # When configured, Gradle will run in incubating parallel mode.