Replace Stetho with Flipper, add LeakCanary

app/proguard-rules-debug.pro

@@ -0,0 +1,25 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
+### Flipper https://github.com/facebook/flipper/issues/314#issuecomment-940828336 ###
+-keep class com.facebook.jni.** { *; }
+-keep class com.facebook.flipper.** { *; }
+### Flipper https://github.com/facebook/flipper/issues/314#issuecomment-940828336 ###