Migrated from uom to custom quantity implementation.

src/lib.rs

@@ -1,11 +1,11 @@
-#![no_std]
+#![cfg_attr(not(feature = "std"), no_std)]
 
 pub mod transducer;
 pub mod control;
 pub mod error;
 
 pub mod adc;
-pub mod uom;
 pub mod circuit;
+pub mod quantity;
 
 pub use error::CriticalError;