Stall timer resets with any Harp message

[alexpiet]

Pull Request instructions:

• Please follow the update protocol
• Answer the questions below in detail. Your responses will be emailed to experimenters.
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Describe changes:

Since we changed the punishment for early licking, trial durations have sometimes gotten long enough to trigger the stall timer. The stall timer was checking the elapsed time since the last trial start as a way of checking if bonsai had crashed. Now I reset the stall timer based on any harp message from bonsai. Therefore early licking cannot trigger the stall timer, since the licks will show up as harp messages.

What issues or discussions does this update address?

• resolves #483

Describe the expected change in behavior from the perspective of the experimenter

• Should see the stall timer only if bonsai crashes

Describe any manual update steps for task computers

• none

Was this update tested in 446/447?

• [x] tested in 447

[alexpiet]

@XX-Yin @hanhou This is ready for review