For current version of Qiime2, fix bugs or highlight deprecation

[colinbrislawn]

All future development on Robust Aitchison PCA has been moved from this repository to Gemelli.

Good to know!

Can we include this depreciation notice on the library page? https://library.qiime2.org/plugins/deicode/19/

(Deicode on conda-forge does not work with 2024.2 right now.)
EDIT: I've renamed the issue. Feel free to add a better name!

I know transitions are hard, so I appreciate the dual challenges of migration and/or legacy support. 🤍

[cameronmartino]

@colinbrislawn - Yes, good idea! Gemelli will work with 2024.2, just patched the numpy issues with the newest version.