message: re-export types
diff: +pub mod api;
  pub(crate) mod impls;
  pub mod redis;
  #[cfg(feature = "model-persistence")]
  pub mod s3;
  +pub mod store;
  #[cfg(test)]
  pub(crate) mod tests;
  pub use self::{
  - impls::{
  - MaskDictIncr,
  - MaskDictIncrError,
  - SeedDictUpdate,
  - SeedDictUpdateError,
  - SumDictAdd,
  - SumDictAddError,
  + api::{
  + CoordinatorStorage,
  + LocalSeedDictAdd,
  + LocalSeedDictAddError,
  + MaskScoreIncr,
  + MaskScoreIncrError,
  + ModelStorage,
  + StorageError,
  + StorageResult,
  + SumPartAdd,
  + SumPartAddError,
  },
  redis::{RedisError, RedisResult},
  + store::Store,
  };
  