add DRY mode, dropping drian didnt help flap so much

poc/2-py-rps/buttons.py

@@ -11,10 +11,14 @@ def tap(keycode):
    up(keycode)
 
 def down(keycode):
+   if environ.get("DRY"):
+      return
    fake_input(_display, X.KeyPress, keycode)
    _display.sync()
 
 def up(keycode):
+   if environ.get("DRY"):
+      return
    fake_input(_display, X.KeyRelease, keycode)
    _display.sync()
 

poc/2-py-rps/test.sh

@@ -35,7 +35,7 @@ python3 ./state_to_buttons.py &
    | python3 ./stream_to_state.py \
       -n 1 \
       -m .25 \
-      -r .3 
+      -r .1 
 ) &
 
 while true; do