Again, I'm not a packager, and, indeed, according to The Man Himself
I recommend putting one package on each line, and keeping them in alphabetical order. That makes it easy to skim.
So, since this is a rule of convenience, rather than a rule of necessity, the idea that comes to mind is to look at forecast
Imports: colorspace, fracdiff, ggplot2 (>= 2.2.1), graphics, lmtest,
magrittr, nnet, parallel, Rcpp (>= 0.11.0), stats, timeDate,
tseries, urca, zoo
Under the assumption that the order of package name space importation matters, it looks like forecast might be comfortable immediately after parallel, since it has no dependencies listed in the following entries.
Other speculations: removing the duplicated packages might work or putting forecast first might let it take care of itself.