deprecate RUBY_IGNORE_CALLERS, fixes #444
deprecate RUBY_IGNORE_CALLERS, fixes #444

dariubs/sinatra,nicoayala/sinatra,ksw2599/sinatra,kgrz/sinatra,DoraALin/sinatra,ktw1222/sinatra,ktw1222/sinatra,emiliocorpus/sinatra,ABaldwinHunter/sinatra-classic,defsprite/sinatra,ryanshaw/sinatra,midorineko/sinatra,miyazawatomoka/sinatra,jenalgit/sinatra,howtolearntocode/sinatra,Rayheng/sinatra,DoraALin/sinatra,defsprite/sinatra,JonRowe/sinatra,nju520/sinatra,lastcat/sinatra,davydovanton/sinatra,JonMidhir/sinatra,d-bot/sinatra,porras/sinatra,miyazawatomoka/sinatra,cyberid41/sinatra,trexnix/sinatra,RosenDimov/sinatra,sethuster/sinatra,Callygraphy/morrissey,jkowens/sinatra,sinatra/sinatra,Rayheng/sinatra,sinatra/sinatra,blambeau/sinatra,Wirachmat/sinatra,autopp/sinatra,porras/sinatra,wzheng1/sinatra,siberianbear/sinatra,siberianbear/sinatra,twanies/sinatra,nicoayala/sinatra,kyontan/sinatra,wzheng1/sinatra,burningTyger/sinatra,laplaceliu/sinatra,gferguson-gd/sinatra,eileencodes/sinatra,dariubs/sinatra,jkowens/sinatra,guidohcosta/sinatra,JonMidhir/sinatra,laplaceliu/sinatra,bmizerany/sinatra,QLGu/sinatra,lastcat/sinatra,howtolearntocode/sinatra,cyberid41/sinatra,mwpastore/sinatra,JonMidhir/sinatra,burningTyger/sinatra,frechei/sinatra,gferguson-gd/sinatra,ganmacs/sinatra,frechei/sinatra,burningTyger/sinatra,kumji/sinatra,jenalgit/sinatra,RosenDimov/sinatra,QLGu/sinatra,marocchino/sinatra,emiliocorpus/sinatra,midorineko/sinatra,sethuster/sinatra,mwpastore/sinatra,kyontan/sinatra,trexnix/sinatra,autopp/sinatra,Wirachmat/sinatra,twanies/sinatra,nju520/sinatra,JonRowe/sinatra,d-bot/sinatra,ganmacs/sinatra,jkowens/sinatra,ksw2599/sinatra,mwpastore/sinatra,guidohcosta/sinatra,kumji/sinatra,davydovanton/sinatra,ryanshaw/sinatra,ABaldwinHunter/sinatra-classic,eileencodes/sinatra