message: added missed import for syncAnnounce
diff: @@ -79,6 +79,7 @@ export * from './transaction/RegisterNamespaceTransaction';
  export * from './transaction/SecretLockTransaction';
  export * from './transaction/SecretProofTransaction';
  export * from './transaction/SignedTransaction';
  +export * from './transaction/SyncAnnounce';
  export * from './transaction/Transaction';
  export * from './transaction/TransactionAnnounceResponse';
  export * from './transaction/TransactionInfo';
  