Clean up API and small fixes

src/types/cursor_position.rs

@@ -10,8 +10,8 @@ use wasm_bindgen::prelude::*;
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Debug, Clone, PartialEq, Default)]
 pub struct CursorPosition {
-    pub id: usize,
-    pub char_index: usize,
+    pub(crate) id: usize,
+    pub(crate) char_index: usize,
 }
 
 #[cfg_attr(feature = "wasm", wasm_bindgen)]

src/types/text_with_cursors.rs

@@ -39,6 +39,11 @@ impl TextWithCursors {
     pub fn cursors(&self) -> Vec<CursorPosition> { self.cursors.clone() }
 }
 
+impl TextWithCursors {
+    #[must_use]
+    pub fn text_ref(&self) -> &str { &self.text }
+}
+
 impl<'a> From<&'a str> for TextWithCursors {
     fn from(text: &'a str) -> Self {
         Self {