Add issue macro and tweak release notes
Add issue macro and tweak release notes

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