Treat quoted_keys as atoms in TOML

CHANGELOG.md

@@ -6,6 +6,8 @@ Added support for Ada.
 
 `.ino` files are now treated as C++.
 
+Improved parsing for TOML.
+
 ### Display
 
 Difftastic no longer uses purple to highlight regions that are missing

src/parse/tree_sitter_parser.rs

@@ -898,7 +898,7 @@ pub fn from_language(language: guess::Language) -> TreeSitterConfig {
             let language = unsafe { tree_sitter_toml() };
             TreeSitterConfig {
                 language,
-                atom_nodes: vec!["string"].into_iter().collect(),
+                atom_nodes: vec!["string", "quoted_key"].into_iter().collect(),
                 delimiter_tokens: vec![("{", "}"), ("[", "]")],
                 highlight_query: ts::Query::new(
                     language,