feat: parse into a Document that keeps order and comments

Assisted-by: DeepSeek V4.1 Flash

bench_test.go

@@ -87,14 +87,14 @@ func BenchmarkParse(b *testing.B) {
 	b.ReportAllocs()
 	b.SetBytes(int64(len(benchDoc)))
 	for b.Loop() {
-		if _, err := Parse(benchDoc); err != nil {
+		if _, err := ParseMap(benchDoc); err != nil {
 			b.Fatal(err)
 		}
 	}
 }
 
 func BenchmarkMarshal(b *testing.B) {
-	tree, err := Parse(benchDoc)
+	tree, err := ParseMap(benchDoc)
 	if err != nil {
 		b.Fatal(err)
 	}
@@ -122,7 +122,7 @@ func BenchmarkParseLong(b *testing.B) {
 	b.ReportAllocs()
 	b.SetBytes(int64(len(longDoc)))
 	for b.Loop() {
-		if _, err := Parse(longDoc); err != nil {
+		if _, err := ParseMap(longDoc); err != nil {
 			b.Fatal(err)
 		}
 	}