fixed a bug in NA handling with which_weights != “none”
CHANGES IN VERSION 1.8.1 (2022-04-28):
fixed a small bug in permutation p-values introduced with the 1.8.0 release
CHANGES IN VERSION 1.7.2 (2022-04-13):
reintroduced CompQuadForm::davies() as a longer alternative when the "saddlepoint" method in survey::pchisqsum() fails for computing quadratic form asymptotic p-values