Update changelog to reflect 1.4.6 release
Update changelog to reflect 1.4.6 release

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