message: Export MemoryStorage, RepLog, StorageTransaction
diff: @@ -15,7 +15,9 @@ pub use crate::errors::{
  };
  pub use crate::mock::{mock_dependencies, mock_env, MockApi, MockStorage};
  pub use crate::serde::{from_slice, to_vec};
  -pub use crate::storage::{transactional, transactional_deps};
  +pub use crate::storage::{
  + transactional, transactional_deps, MemoryStorage, RepLog, StorageTransaction,
  +};
  pub use crate::traits::{Api, Extern, ReadonlyStorage, Storage};
  pub use crate::types::{
  coin, log, CanonicalAddr, ContractResult, CosmosMsg, Env, HumanAddr, QueryResult, Response,
  