digest: alias core_api with a depreciation notice

Author: baloo

digest/src/lib.rs

@@ -74,6 +74,10 @@ pub use crypto_common::{Output, OutputSizeUser, Reset, array, typenum, typenum::
 pub use mac::{CtOutput, Mac, MacError, MacMarker};
 pub use xof_fixed::XofFixedWrapper;
 
+#[cfg(feature = "block-api")]
+#[deprecated(since = "0.11.0", note = "`digest::core_api` has been replaced by `digest::block_api`")]
+pub use block_api as core_api;
+
 use core::fmt;
 use crypto_common::typenum::Unsigned;