Create error for local G* if self included is missing

[JosiahParry]

When the self isnt included it is added and weights are recalculated. It makes the assumption of queen weights. This isn't fair.
Instead, it should error out and inform the user that self.included is missing and that it should be added with included_self(nb) and then calculate weights

sfdep/R/localG-star.R

Line 25 in 91b4e19

if (is.null(attr(nb, "self.included"))) {

[opelolo]

Hello @JosiahParry please will you kindly assign this to me as well? I'd like to try it if it's still available. Thank you