Address some TODOs

TODO.txt

@@ -1,5 +1,8 @@
 =========== GENERAL ==============
 
+- add simple particle effects for grass/dirt/drift? Can be just a few squares
+  animated from the projected backwheels.
+- fix the ramp map again due to new physics
 - keyboard ghosting is an issue, particularly when initiating drift with brake
   (arrow keys must be used with S for braking for left drift to work) -- think
   about what to do about this? or leave as is?
@@ -70,18 +73,18 @@
   turned on the roof, once even shot to the ceiling of the map.
 - Managed to get the car stuck in non-rotating state, then after a while get
   it back by crashing.
-- very rarely the near plane overflow bug still happens, maybe shift near plane
-  a bit further still?
-- sometimes during long loading the screen goes black, seems to have appeared
-  after adding LCR_LOADING_COMMAND (seems fixed now)
 - immediately after starting the map countdown seems to be lower (seems to
   perhaps be caused by nextPhysicsFrameTime, look into it)
-- the pinch collision test seems to sometimes stop the car e.g. after falling
-  from bigger height or when running into ramp at high speed (or not?) - FIX
 
 =========== HANDLED ==============
 
 - MAP4: one triangle in top section is missing!
+- the pinch collision test seems to sometimes stop the car e.g. after falling
+  from bigger height or when running into ramp at high speed (or not?) - FIX
+- sometimes during long loading the screen goes black, seems to have appeared
+  after adding LCR_LOADING_COMMAND (seems fixed now)
+- very rarely the near plane overflow bug still happens, maybe shift near plane
+  a bit further still?
 - Unstuck idea: make the body non-rotating for a while?
 - Create a physics test map.
 - Antibug: maybe always simulate the step with non-rotating body AND normal one