Aggregate of values and state needed to rate-limit outgoing messages.
Don't copy this, just keep one instance.
Resets the throttle values in-place.
By how much to bump y on sent message.
y at t0 (ergo y at x = 0, weight at last sent message).
Origo of x-axis (last sent message).
Aggregate of values and state needed to rate-limit outgoing messages.