HS: sourceInfo 4/4 + arrayLiteral 8/8 (+5 tests)

- tokenizer hs-emit!: add :end (max pos, start+len(val)) and :line fields to tokens
- parser hs-parse-ast: wrap fn body in do so set! hs-span-mode executes
- runtime hs-make-object: remove _order key (V8 native insertion order sufficient)

lib/hyperscript/runtime.sx

@@ -2156,20 +2156,13 @@
   (fn
     (pairs)
     (let
-      ((d {}) (order (list)))
+      ((d {}))
       (do
         (for-each
           (fn
             (pair)
-            (let
-              ((k (first pair)))
-              (do
-                (when
-                  (not (dict-has? d k))
-                  (set! order (append order (list k))))
-                (dict-set! d k (nth pair 1)))))
+            (dict-set! d (first pair) (nth pair 1)))
           pairs)
-        (when (not (empty? order)) (dict-set! d "_order" order))
         d))))
 
 (define