update todo

_NOTICE

@@ -3,15 +3,14 @@ please be mindful when sharing it.
 however, feel free to copy any snippets of code you find useful.
 
 TODOs: (that i can remember right now)
-- finish implementing ARS
-'-> running mean/std normalization of all inputs (aka ARS V2)
-'-> normalize and/or embed sprite inputs
+- normalize and/or embed sprite type inputs
 - settle on a network architecture
 - fix lag-frames skipped-inputs bug
 - detect frames when Mario is in a controllable state
-- fix offscreen sprites sometimes being visible to network
-- add some detection for enemies later in the game
 - compute how many input neurons the network needs instead of hardcoding
+- rewrite positions to be relative to Mario
+'-> fix offscreen sprites sometimes being visible to network
+- add some detection for enemies later in the game
 
 naive:
 - learn any combination of buttons, starting from title screen