developer mode mod: game's developer switch on (warp with a+s, river log cheat), keys for the hidden aux inputs (fly, heart and fruit, idols, coins) on both exe versions

notes/mod-cheats.md

@@ -166,7 +166,7 @@ layout or low-memory mode), not a debug flag. Other constant getter cases: 0x5E/
 0x98, 0x9E, 0xC1, 0xD8, 0xED, 0xEE, 0x102 = 0; of the zero ids only 0 and 0x102 are read by any strat.
 No exe code writes padAux, and no other dev key handler was found beyond the table above (F4, F6, F7).
 
-Suggested "Developer mode" option for the cheats mod (not implemented): patch byte 0x552320 to 1
+Implemented as the separate mod `devmode` (see `mod-devmode.md`); original suggestion: patch byte 0x552320 to 1
 (or point jump-table entry 0x552A8C at a cave that pushes 0x1000, leaving the shared handler alone),
 and map keys to padAux in the pad poll: at the end of FUN_004256C0 (0x425B88, where padAux is only
 cleared when >1 pad) jump to a cave that builds padAux from the DIK state array 0x58226C + 4·DIK,