refactor(imports) make required types available for retry and networking

Author: Mohit Tejani

pubnub/lib/pubnub.dart

@@ -26,7 +26,7 @@ export 'src/core/exceptions.dart'
         PublishException,
         UnknownException;
 export 'src/core/policies/retry_policy.dart'
-    show RetryPolicy, LinearRetryPolicy, ExponentialRetryPolicy;
+    show RetryPolicy, LinearRetryPolicy, ExponentialRetryPolicy, NoneRetryPolicy;
 export 'src/core/crypto/crypto.dart' show CipherKey;
 export 'src/crypto/crypto.dart' show CryptoModule;
 export 'src/crypto/cryptoConfiguration.dart' show CryptoConfiguration;
@@ -132,4 +132,7 @@ export 'src/subscribe/envelope.dart'
 
 // Logging
 export 'src/logging/logging.dart' show LogRecord, StreamLogger;
-export 'src/core/logging/logging.dart' show Level, ILogger, LogEvent;
+export 'src/core/logging/logging.dart' show Level, ILogger, LogEvent, provideLogger;
+
+// Networking
+export 'src/networking/networking.dart' show NetworkingModule;

pubnub/test/unit/core/retry_policy_test.dart

@@ -1,7 +1,5 @@
 import 'package:test/test.dart';
 import 'package:pubnub/pubnub.dart';
-import 'package:pubnub/networking.dart';
-import 'package:pubnub/logging.dart';
 
 void main() {
   group('Retry Policy', () {