Address #52 almost entirely - target upstream builds of CircuitPython and simply copy (rsync) KMK source, a basic main.py, and the user's keymap to the CIRCUITPY drive

user_keymaps/kdb424/handwire_planck_featherm4.py

@@ -86,3 +86,6 @@ keymap = [
         [KC.DF(0), KC.DF(1), KC.TRNS, KC.TRNS, KC.TRNS, KC.TRNS, KC.TRNS, KC.TRNS, KC.F1, KC.F2, KC.F3, KC.NO],
     ],
 ]
+
+if __name__ == '__main__':
+    main()

user_keymaps/klardotsh/feather_m4_express/fourfour.py

@@ -71,3 +71,6 @@ keymap = [
         [KC.O,    KC.P,             KC.Q],
     ],
 ]
+
+if __name__ == '__main__':
+    main()

user_keymaps/klardotsh/itsybitsy_m4_express/threethree.py

@@ -87,3 +87,6 @@ keymap = [
         [KC.TRNS,                       KC.P,               MACRO_HELLO_WORLD],
     ],
 ]
+
+if __name__ == '__main__':
+    main()