diff --git a/src/str.rs b/src/str.rs
deleted file mode 100644
index fb32bd1..0000000
--- a/src/str.rs
+++ /dev/null
@@ -1,74 +0,0 @@
-//! Methods for applying composition and decomposition to strings and char iterators.
-
-pub use super::decompose::Decompositions;
-pub use super::recompose::Recompositions;
-
-
-/// Methods for iterating over strings while applying Unicode normalizations
-/// as described in
-/// [Unicode Standard Annex #15](http://www.unicode.org/reports/tr15/).
-pub trait UnicodeNormalization<I: Iterator<Item=char>> {
-    /// Returns an iterator over the string in Unicode Normalization Form D
-    /// (canonical decomposition).
-    #[inline]
-    fn nfd_chars(self) -> Decompositions<I>;
-
-    /// Returns an iterator over the string in Unicode Normalization Form KD
-    /// (compatibility decomposition).
-    #[inline]
-    fn nfkd_chars(self) -> Decompositions<I>;
-
-    /// An Iterator over the string in Unicode Normalization Form C
-    /// (canonical decomposition followed by canonical composition).
-    #[inline]
-    fn nfc_chars(self) -> Recompositions<I>;
-
-    /// An Iterator over the string in Unicode Normalization Form KC
-    /// (compatibility decomposition followed by canonical composition).
-    #[inline]
-    fn nfkc_chars(self) -> Recompositions<I>;
-}
-
-impl<'a> UnicodeNormalization<Chars<'a>> for &'a str {
-    #[inline]
-    fn nfd_chars(self) -> Decompositions<Chars<'a>> {
-        super::decompose::new_canonical(self.chars())
-    }
-
-    #[inline]
-    fn nfkd_chars(self) -> Decompositions<Chars<'a>> {
-        super::decompose::new_compatible(self.chars())
-    }
-
-    #[inline]
-    fn nfc_chars(self) -> Recompositions<Chars<'a>> {
-        super::recompose::new_canonical(self.chars())
-    }
-
-    #[inline]
-    fn nfkc_chars(self) -> Recompositions<Chars<'a>> {
-        super::recompose::new_compatible(self.chars())
-    }
-}
-
-impl<I: Iterator<Item=char>> UnicodeNormalization<I> for I {
-    #[inline]
-    fn nfd_chars(self) -> Decompositions<I> {
-        super::decompose::new_canonical(self)
-    }
-
-    #[inline]
-    fn nfkd_chars(self) -> Decompositions<I> {
-        super::decompose::new_compatible(self)
-    }
-
-    #[inline]
-    fn nfc_chars(self) -> Recompositions<I> {
-        super::recompose::new_canonical(self)
-    }
-
-    #[inline]
-    fn nfkc_chars(self) -> Recompositions<I> {
-        super::recompose::new_compatible(self)
-    }
-}