add gui, mail and programming language settings

settings/post-settings.el

@@ -0,0 +1,13 @@
+;;; post-settings.el --- Summary  -*- lexical-binding: t -*-
+;;; Commentary:
+;;; Code:
+(setq gc-cons-threshold (* 2 1000 1000))           ;; Make gc pauses faster by decreasing back the threshold.  See also above.
+
+(use-package cus-edit
+  :config
+  (setq custom-file (concat user-emacs-directory "custom.el"))
+  (setq custom-buffer-done-kill t)
+  (load custom-file t t))
+
+(provide 'post-settings)
+;;; post-settings.el ends here