Use lexical bindings and remove cl package

lisp/use-package/use-package-bind-key.el

@@ -1,4 +1,4 @@
-;;; use-package-bind-key.el --- Support for the :bind/:bind-keymap keywords
+;;; use-package-bind-key.el --- Support for the :bind/:bind-keymap keywords  -*- lexical-binding: t; -*-
 
 ;; Copyright (C) 2012-2017 John Wiegley
 

lisp/use-package/use-package-chords.el

@@ -1,4 +1,4 @@
-;;; use-package-chords.el --- key-chord keyword for use-package
+;;; use-package-chords.el --- key-chord keyword for use-package  -*- lexical-binding: t; -*-
 
 ;; Copyright (C) 2015-2017 Justin Talbott
 

lisp/use-package/use-package-core.el

@@ -1,4 +1,4 @@
-;;; use-package-core.el --- A configuration macro for simplifying your .emacs
+;;; use-package-core.el --- A configuration macro for simplifying your .emacs  -*- lexical-binding: t; -*-
 
 ;; Copyright (C) 2012-2017 John Wiegley
 
@@ -43,7 +43,6 @@
 (require 'cl-lib)
 
 (eval-when-compile
-  (require 'cl)
   (require 'regexp-opt))
 
 (defgroup use-package nil

lisp/use-package/use-package-delight.el

@@ -1,4 +1,4 @@
-;;; use-package-delight.el --- Support for the :delight keyword
+;;; use-package-delight.el --- Support for the :delight keyword  -*- lexical-binding: t; -*-
 
 ;; Copyright (C) 2012-2017 John Wiegley
 

lisp/use-package/use-package-diminish.el

@@ -1,4 +1,4 @@
-;;; use-package-diminish.el --- Support for the :diminish keyword
+;;; use-package-diminish.el --- Support for the :diminish keyword  -*- lexical-binding: t; -*-
 
 ;; Copyright (C) 2012-2017 John Wiegley
 

lisp/use-package/use-package-ensure.el

@@ -1,4 +1,4 @@
-;;; use-package-ensure.el --- Support for the :ensure and :pin keywords
+;;; use-package-ensure.el --- Support for the :ensure and :pin keywords  -*- lexical-binding: t; -*-
 
 ;; Copyright (C) 2012-2017 John Wiegley
 

lisp/use-package/use-package-jump.el

@@ -1,4 +1,4 @@
-;;; use-package-jump.el --- Attempt to jump to a use-package declaration
+;;; use-package-jump.el --- Attempt to jump to a use-package declaration  -*- lexical-binding: t; -*-
 
 ;; Copyright (C) 2012-2017 John Wiegley
 

lisp/use-package/use-package-lint.el

@@ -1,4 +1,4 @@
-;;; use-package-lint.el --- Attempt to find errors in use-package declarations
+;;; use-package-lint.el --- Attempt to find errors in use-package declarations  -*- lexical-binding: t; -*-
 
 ;; Copyright (C) 2012-2017 John Wiegley
 

lisp/use-package/use-package.el

@@ -1,4 +1,4 @@
-;;; use-package.el --- A configuration macro for simplifying your .emacs
+;;; use-package.el --- A configuration macro for simplifying your .emacs  -*- lexical-binding: t; -*-
 
 ;; Copyright (C) 2012-2017 John Wiegley
 

test/lisp/use-package/use-package-tests.el

@@ -1,4 +1,4 @@
-;;; use-package-tests.el --- Tests for use-package.el
+;;; use-package-tests.el --- Tests for use-package.el  -*- lexical-binding: t; -*-
 
 ;; This program is free software; you can redistribute it and/or
 ;; modify it under the terms of the GNU General Public License as
@@ -22,7 +22,6 @@
 
 ;;; Code:
 
-(require 'cl)
 (require 'ert)
 (require 'use-package)