Guarantee known size of the output iterator

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "instant-segment"
-version = "0.6.0"
+version = "0.6.1"
 authors = ["Dirkjan Ochtman <dirkjan@ochtman.nl>"]
 edition = "2018"
 license = "Apache-2.0"

src/lib.rs

@@ -214,7 +214,7 @@ impl Search {
     }
 
     /// Get the segmentation result
-    pub fn split(&self) -> impl Iterator<Item = &str> {
+    pub fn split(&self) -> impl Iterator<Item = &str> + ExactSizeIterator {
         self.result.iter().map(|v| v.as_str())
     }
 }