for a particular value of y, ytmin1, delt, compute the max part (before taking sup) in computing the lower bound of DoTT(delt), see Callaway (2017), Lemma 3
l.inner(y, ytmin1, delt, ytmin1.seq, Y1t, Y0tmin1, Y0tmin2, Y0tqteobj, F.y1,
F.y0)a value to compute the inner part of Lemma 3 for
the value of ytmin1 to condition on
the value to obtain the DoTT for
vector of outcomes for the treated group in period t
vector of outcomes for the treated group in period t-1
vector of outcomes for the treated group in period t-2
scalar that depends on the values of y, ytmin1, and delt