Added let-alist package to be compatible with older emacs on debian

emacs/.emacs

@@ -128,6 +128,10 @@
 ;  :demand t
 ;  :config '(my/shackle-rules))
 
+(use-package let-alist
+  :ensure t
+  :demand t)
+
 ;; powerline
 (use-package powerline
   :ensure t
@@ -168,7 +172,9 @@
   (add-hook 'org-mode-hook
             (lambda ()
               (linum-mode 0)
-              (setq-local line-spacing 0.2))))
+              (setq-local line-spacing 0.2)
+              (setq-local fill-column 80)
+              (auto-fill-mode 1))))
 
 ;; Org Bullets
 (use-package org-bullets