fix: don't get tokio as a bonus (sub)dependency

crates/maybenot/Cargo.toml

@@ -27,5 +27,5 @@ bincode = "1.3.3"
 base64 = "0.22.0"
 flate2 = "1.0.28"
 enum-map = "2.7.3"
-sha256 = "1.5.0"
+sha256 = {version = "1.5.0", default-features = false}
 rand_core = "0.6.4"

crates/maybenot/README.md

@@ -47,6 +47,7 @@ and executing scheduled actions. Maybenot does not specify the specific async
 runtime or how to keep time for ease of integration.
 
 ## Example usage
+
 ```rust,no_run
 use crate::{Framework, Machine, TriggerAction, TriggerEvent};
 use std::{str::FromStr, time::Instant};