kem: re-export typenum::consts (#2058)

Access to typenum constants is needed to impl `KeySizeUser`

Author: tarcieri

kem/src/lib.rs

@@ -8,7 +8,7 @@
 #![forbid(unsafe_code)]
 #![warn(missing_docs, unused_qualifications, missing_debug_implementations)]
 
-pub use crypto_common::{KeyInit, KeySizeUser};
+pub use crypto_common::{KeyInit, KeySizeUser, typenum::consts};
 
 use core::fmt::Debug;
 use rand_core::TryCryptoRng;