The changes above have been backported to 3.6 maintenance releases.
+NEW in 3.7.4:
+
+Add "Run Customized" to the Run menu to run a module with customized
+settings. Any command line arguments entered are added to sys.argv.
+They re-appear in the box for the next customized run. One can also
+suppress the normal Shell main module restart. (Contributed by Cheryl
+Sabella, Terry Jan Reedy, and others in :issue:`5680` and :issue:`37627`.)
+
New in 3.7.5:
Add optional line numbers for IDLE editor windows. Windows
open without line numbers unless set otherwise in the General
-tab of the configuration dialog.
+tab of the configuration dialog. Line numbers for an existing
+window are shown and hidden in the Options menu.
(Contributed by Tal Einat and Saimadhav Heblikar in :issue:`17535`.)