`ConnectionHandle` not found when using `axum` but not `tungstenite` feature

[kasbah]

   Compiling samod v0.9.0
error[E0425]: cannot find type `ConnectionHandle` in this scope
   --> /home/kaspar/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/samod-0.9.0/src/websocket.rs:272:17
    |
272 |     ) -> Result<ConnectionHandle, crate::Stopped> {
    |                 ^^^^^^^^^^^^^^^^ not found in this scope
    |
help: consider importing this struct through its public re-export
    |
  1 + use crate::ConnectionHandle;
    |

Adding tungstenite to features works around this. Previously we had only features = ["tokio", "axum"]