split embassy-util into embassy-futures, embassy-sync.

embassy-futures/src/lib.rs

@@ -0,0 +1,12 @@
+#![no_std]
+#![doc = include_str!("../../README.md")]
+#![warn(missing_docs)]
+
+// This mod MUST go first, so that the others see its macros.
+pub(crate) mod fmt;
+
+mod select;
+mod yield_now;
+
+pub use select::*;
+pub use yield_now::*;