`time.sleep()` seems to misbehave if it is control-c'd in REPL: ``` Adafruit CircuitPython 5.0.0 on 2020-03-02; Adafruit CLUE nRF52840 Express with nRF52840 >>> >>> >>> import board, time >>> board.DISPLAY.auto_refresh = False # can affect timing >>> time.sleep(3) >>> time.sleep(3) >>> time.sleep(10) # control-c after a few seconds >>> time.sleep(1) >>> time.sleep(10) >>> time.sleep(100) # last three returned immediately >>> t1=time.monotonic() ; time.sleep(100) ; print(time.monotonic() - t1) 0.0 >>> print(time.monotonic()) 3483.65 >>> print(time.monotonic()) # still works 3484.34 >>> print(time.monotonic_ns()) 3513715188000 >>> print(time.monotonic_ns()) # still works 3514536192000 ```