Deprecate BStr and BString

src/trie.rs

@@ -9,6 +9,7 @@ use key::{AsKey, Break};
 use node::{Leaf, Node};
 use subtrie::SubTrie;
 use util::nybble_mismatch;
+#[allow(deprecated)]
 use wrapper::{BStr, BString};
 
 /// A QP-trie. QP stands for - depending on who you ask - either "quelques-bits popcount" or
@@ -353,6 +354,7 @@ where
     }
 }
 
+#[allow(deprecated)]
 impl<V> Trie<BString, V> {
     /// Convenience function for iterating over suffixes with a string.
     pub fn iter_prefix_str<'a, Q: ?Sized>(&self, key: &'a Q) -> Iter<BString, V>

src/wrapper.rs

@@ -1,3 +1,5 @@
+#![allow(deprecated)]
+
 use std::borrow::Borrow;
 use std::fmt;
 use std::hash::{Hash, Hasher};
@@ -8,6 +10,7 @@ use key::AsKey;
 /// A wrapper for `String` which implements `Borrow<[u8]>` and hashes in the same way as a byte
 /// slice.
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[deprecated(since = "0.8.0", note = "use a plain `String` instead")]
 #[derive(Clone, PartialEq, Eq, PartialOrd, Ord)]
 pub struct BString(String);
 
@@ -96,6 +99,7 @@ impl Hash for BString {
 
 /// A wrapper type for `str` which implements `Borrow<[u8]>` and hashes in the same way as a byte
 /// slice.
+#[deprecated(since = "0.8.0", note = "use a plain `str` instead")]
 #[derive(PartialEq, Eq, PartialOrd, Ord)]
 pub struct BStr(str);
 

tests/lib.rs

@@ -1,3 +1,5 @@
+#![allow(deprecated)]
+
 extern crate rand;
 #[macro_use]
 extern crate quickcheck;