Fix laser locking for time-varying frequency plans
For time-varying frequency plans, we should pick the frequency-plan locking beatnotes at \tau + q_i^o(\tau) + \delta\hat\tau_{i,0}(\tau)
instead of \tau
, see eq. (97) of https://www.overleaf.com/read/dmdmkvrnzhth.
Edited by Jean-Baptiste Bayle