OLS regression - 1-th leading minor of the array is not positive definite imply

[vallerrr]

error occurred when setting replace = False in the union example

union_robust.fit(controls=c,draws=200,replace=False)

[dhvalden]

fixed byt removing the argument replace for all functions

[crahal]

We might want to instead consider keeping replace==True, and try\excepting this with np.nans in the exceptions, but I'll leave it as closed for now.