add borsh feature to readme

README.md

@@ -113,7 +113,7 @@ The `rand` feature allows creation of random `bnum` integers via the [`rand`](ht
 
 The `serde` feature enables serialization and deserialization of `bnum` integers via the [`serde`](https://docs.rs/serde/latest/serde/) and [`serde_big_array`](https://docs.rs/serde-big-array/latest/serde_big_array/) crates.
 
-The `borsh`
+The `borsh` feature enables serialization and deserialization of `bnum` integers via the [`borsh`](https://docs.rs/borsh/latest/borsh/) crate.
 
 ### `num_traits` and `num_integer` trait implementations
 

changes/v0.12.0

@@ -3,7 +3,7 @@
 - `As` and `CastFrom` traits no longer const, as const trait support removed from latest nightly.
 - `cast_signed` method for unsigned integers.
 - `cast_unsigned` method for signed integers.
-- `midpoint` method for unsigned integers.
+- `midpoint` method for integers.
 - `carrying_add` and `borrowing_sub` methods for signed integers.
 - strict methods added.
 - added `(bnum) ` prefix to error messages that were lacking it.

src/bint/mod.rs

@@ -18,9 +18,6 @@ macro_rules! ilog {
     }
 }
 
-// #[cfg(debug_assertions)]
-// use crate::errors::option_expect;
-
 use crate::digit;
 use crate::ExpType;
 use crate::{doc, errors};