Change: Enable lexical-binding

Hopefully this doesn't break anything...

org-ql.el

@@ -1,3 +1,6 @@
+;; -*- lexical-binding: t; -*-
+
+
 ;;; Code:
 
 ;;;; Requirements
@@ -79,6 +82,7 @@ Headings should return non-nil for any ANY-PREDS and nil for all
 NONE-PREDS.  If NARROW is non-nil, buffer will not be widened
 first."
   ;; Cache `org-today' so we don't have to run it repeatedly.
+  (let (today)
     (cl-letf ((today org-ql--today))
       (org-ql--fmap ((category #'org-ql--category-p)
                      (date #'org-ql--date-plain-p)
@@ -102,7 +106,7 @@ first."
               (outline-next-heading))
             (cl-loop when (funcall pred)
                      collect (org-element-headline-parser (line-end-position))
-                   while (outline-next-heading)))))))
+                     while (outline-next-heading))))))))
 
 ;;;;; Predicates