this is not new (I guess), but I noticed section 31.4 about
"Cointegration tests" in the chapter "Univariate time series models".
find this unfotunate because how can _co_integration be univariate? I
know that sometimes people refer to a single-equation setup as
univariate but I always thought that was at least sloppy and actually wrong.
So I'd like to move that section into the "Cointegration and VECM"