Added *Backtrace* to “special buffers”.

init.el

@@ -1,5 +1,5 @@
 ;;; init.el --- tastytea's Emacs init file.
-;; Time-stamp: <2019-05-29T00:04:52+00:00>
+;; Time-stamp: <2019-06-09T21:39:33+00:00>
 
 ;;; Commentary:
 ;; I am using this file with Emacs 26, but most of it will probably work with
@@ -624,7 +624,8 @@ With argument, do this that many times."
         (nconc clean-buffer-list-kill-regexps
                '("\\`magit-?.*:"
                  "\\.log\\'"
-                 "\\`\\*rdm\\*\\'")))
+                 "\\`\\*rdm\\*\\'"
+                 "\\`\\*Backtrace\\*\\'")))
   (midnight-mode t))
 
 ;; The string Time-stamp: <> in the first 8 lines of the file will be updated