Document something about deprecation.
Document something about deprecation.

martinlaz/lenskit,tajinder-txstate/lenskit,blankazucenalg/lenskit,tajinder-txstate/lenskit,linjunleo/lenskit,tajinder-txstate/lenskit,kluver/lenskit,martinlaz/lenskit,tajinder-txstate/lenskit,aglne/lenskit,kluver/lenskit,vaibhav345/lenskit,chrysalag/lenskit,kluver/lenskit,vaibhav345/lenskit,vijayvani/Lenskit,kluver/lenskit,blankazucenalg/lenskit,vaibhav345/lenskit,binweiwu/lenskit,kluver/lenskit,vaibhav345/lenskit,chrysalag/lenskit,binweiwu/lenskit,aglne/lenskit,linjunleo/lenskit,vijayvani/Lenskit,amaliujia/lenskit,amaliujia/lenskit