507 add new node implementing jaakkola jordans lower bound on sigmoid log sigmoid in bishop prml#529

mhidalgoaraya wants to merge 2 commits intomainReactiveBayes/ReactiveMP.jl:mainfrom

507-add-new-node-implementing-jaakkola-jordans-lower-bound-on-sigmoid-log-sigmoid-in-bishop-prmlReactiveBayes/ReactiveMP.jl:507-add-new-node-implementing-jaakkola-jordans-lower-bound-on-sigmoid-log-sigmoid-in-bishop-prmlCopy head branch name to clipboard