Prevent race conditions

- This is a massive cope, I don't know how to code

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

src/types/mod.rs

@@ -1,11 +1,8 @@
 pub mod alpaca;
 pub mod asset;
+pub mod backfill;
 pub mod bar;
 
 pub use asset::{Asset, Class, Exchange};
-pub use bar::{Bar, BarValidity};
-
-#[derive(Clone, Debug, PartialEq, Eq)]
-pub enum BroadcastMessage {
-    Asset((asset::BroadcastMessage, Vec<Asset>)),
-}
+pub use backfill::Backfill;
+pub use bar::Bar;