minor fixes + add is_empty()

Cargo.toml

@@ -6,5 +6,5 @@ authors = ["sam0x17"]
 description = "Provides a safe interface for interacting with multi-byte strings in Rust, namely IndexedStr, IndexedString, and IndexedSlice"
 license = "MIT"
 repository = "https://github.com/sam0x17/safe-string"
-website = "https://sam0x17.dev"
+homepage = "https://sam0x17.dev"
 documentation = "https://docs.rs/safe-string"

src/lib.rs

@@ -95,6 +95,11 @@ pub trait IndexedStr:
     /// [`len`](`IndexedStr::len`) if the string contains multi-byte characters.
     fn byte_len(&self) -> usize;
 
+    /// Returns `true` if this [`IndexedStr`] is empty (of length 0).
+    fn is_empty(&self) -> bool {
+        self.len() == 0
+    }
+
     /// Returns the character at the given index, if it exists.
     fn char_at(&self, index: usize) -> Option<char>;