don't turbo in playable mode, note overlay bug

_NOTICE

@@ -10,6 +10,7 @@ TODOs: (that i can remember right now)
 - rewrite positions to be relative to Mario
 '-> fix offscreen sprites sometimes being visible to network
 - add some detection for enemies later in the game
+- fix cfg.enable_overlay (smb.lua doesn't see it being changed)
 
 naive:
 - learn any combination of buttons, starting from title screen

main.lua

@@ -547,7 +547,7 @@ local function init()
 
     emu.poweron()
     emu.unpause()
-    emu.speedmode("turbo")
+    if not cfg.playable_mode then emu.speedmode("turbo") end
 
     while emu.framecount() < 195 do  -- FIXME: don't hardcode this.
         joypad_mash('start')