Citation for DAA paper

[TuomasBorman]

Nice paper about DAA methods https://arxiv.org/abs/2404.02691

Add citation to DAA chapter.

Also, consider adding wrapper for wilcoxon text.

1. Relatively simple to implement for users also (basically just loop)
2. Requires some coding, and widely used --> wrapper might be beneficial (there could be option for other statistical tests)