Retrofit requires at minimum Java 8+ or Android API 21+.
If you are using R8 or ProGuard add the options from this file.
-You might also need rules for OkHttp and Okio which are dependencies of this library.
+If you are using R8 the shrinking and obfuscation rules are included automatically.
+ProGuard users must manually add the options from retrofit2.pro.
+You might also need rules for OkHttp and Okio which are dependencies of this library.