3.2 to 4.0 section in upgrading guide is no longer wip. [ci skip]
3.2 to 4.0 section in upgrading guide is no longer wip. [ci skip]

illacceptanything/illacceptanything,Vasfed/rails,sealocal/rails,jeremy/rails,gauravtiwari/rails,Edouard-chin/rails,riseshia/railsguides.kr,kachick/rails,georgeclaghorn/rails,kmayer/rails,vassilevsky/rails,coreyward/rails,lcreid/rails,matrinox/rails,kirs/rails-1,samphilipd/rails,printercu/rails,MSP-Greg/rails,fabianoleittes/rails,yahonda/rails,kmcphillips/rails,kmcphillips/rails,pschambacher/rails,Erol/rails,gavingmiller/rails,mijoharas/rails,pschambacher/rails,Edouard-chin/rails,baerjam/rails,mohitnatoo/rails,arunagw/rails,voray/rails,MichaelSp/rails,odedniv/rails,88rabbit/newRails,kaspth/rails,pvalena/rails,riseshia/railsguides.kr,tijwelch/rails,samphilipd/rails,assain/rails,Envek/rails,coreyward/rails,palkan/rails,prathamesh-sonpatki/rails,mechanicles/rails,MichaelSp/rails,Vasfed/rails,Envek/rails,EmmaB/rails-1,stefanmb/rails,mohitnatoo/rails,kddeisz/rails,bradleypriest/rails,xlymian/rails,tgxworld/rails,aditya-kapoor/rails,bogdanvlviv/rails,gauravtiwari/rails,odedniv/rails,elfassy/rails,mechanicles/rails,mtsmfm/railstest,kirs/rails-1,marklocklear/rails,coreyward/rails,elfassy/rails,ttanimichi/rails,repinel/rails,baerjam/rails,lcreid/rails,aditya-kapoor/rails,arjes/rails,richseviora/rails,arunagw/rails,lucasmazza/rails,rafaelfranca/omg-rails,Spin42/rails,riseshia/railsguides.kr,tjschuck/rails,notapatch/rails,maicher/rails,Stellenticket/rails,yalab/rails,eileencodes/rails,sergey-alekseev/rails,Envek/rails,yahonda/rails,yahonda/rails,MSP-Greg/rails,iainbeeston/rails,felipecvo/rails,yahonda/rails,brchristian/rails,shioyama/rails,kachick/rails,joonyou/rails,ngpestelos/rails,mohitnatoo/rails,georgeclaghorn/rails,arunagw/rails,joonyou/rails,brchristian/rails,georgeclaghorn/rails,maicher/rails,travisofthenorth/rails,deraru/rails,yasslab/railsguides.jp,eileencodes/rails,yasslab/railsguides.jp,gfvcastro/rails,kachick/rails,palkan/rails,illacceptanything/illacceptanything,bogdanvlviv/rails,yawboakye/rails,illacceptanything/illacceptanything,eileencodes/rails,shioyama/rails,schuetzm/rails,EmmaB/rails-1,Stellenticket/rails,richseviora/rails,esparta/rails,aditya-kapoor/rails,Edouard-chin/rails,bolek/rails,kmcphillips/rails,schuetzm/rails,illacceptanything/illacceptanything,yalab/rails,repinel/rails,yawboakye/rails,tjschuck/rails,stefanmb/rails,MSP-Greg/rails,pschambacher/rails,printercu/rails,betesh/rails,repinel/rails,tijwelch/rails,georgeclaghorn/rails,baerjam/rails,lucasmazza/rails,vassilevsky/rails,printercu/rails,illacceptanything/illacceptanything,kmayer/rails,ttanimichi/rails,rossta/rails,ledestin/rails,yhirano55/rails,Envek/rails,xlymian/rails,illacceptanything/illacceptanything,arjes/rails,lucasmazza/rails,bradleypriest/rails,MSP-Greg/rails,kenta-s/rails,EmmaB/rails-1,BlakeWilliams/rails,joonyou/rails,koic/rails,matrinox/rails,kamipo/rails,gauravtiwari/rails,yalab/rails,kenta-s/rails,hanystudy/rails,vipulnsward/rails,flanger001/rails,assain/rails,assain/rails,shioyama/rails,bradleypriest/rails,richseviora/rails,samphilipd/rails,mtsmfm/rails,Stellenticket/rails,iainbeeston/rails,matrinox/rails,mtsmfm/rails,repinel/rails,shioyama/rails,travisofthenorth/rails,marklocklear/rails,kmcphillips/rails,rails/rails,maicher/rails,yasslab/railsguides.jp,Spin42/rails,BlakeWilliams/rails,betesh/rails,jeremy/rails,sealocal/rails,rails/rails,travisofthenorth/rails,mijoharas/rails,kddeisz/rails,Erol/rails,lcreid/rails,printercu/rails,mathieujobin/reduced-rails-for-travis,kenta-s/rails,tijwelch/rails,eileencodes/rails,notapatch/rails,prathamesh-sonpatki/rails,rails/rails,tjschuck/rails,starknx/rails,sealocal/rails,gcourtemanche/rails,prathamesh-sonpatki/rails,esparta/rails,marklocklear/rails,ngpestelos/rails,gfvcastro/rails,vassilevsky/rails,illacceptanything/illacceptanything,utilum/rails,utilum/rails,rafaelfranca/omg-rails,tgxworld/rails,ttanimichi/rails,starknx/rails,flanger001/rails,gavingmiller/rails,Erol/rails,jeremy/rails,mtsmfm/railstest,deraru/rails,alecspopa/rails,Spin42/rails,mechanicles/rails,deraru/rails,88rabbit/newRails,illacceptanything/illacceptanything,yawboakye/rails,BlakeWilliams/rails,sergey-alekseev/rails,kirs/rails-1,88rabbit/newRails,Stellenticket/rails,illacceptanything/illacceptanything,bolek/rails,rbhitchcock/rails,bolek/rails,esparta/rails,illacceptanything/illacceptanything,tgxworld/rails,schuetzm/rails,rails/rails,untidy-hair/rails,fabianoleittes/rails,jeremy/rails,kddeisz/rails,assain/rails,palkan/rails,flanger001/rails,betesh/rails,arjes/rails,utilum/rails,brchristian/rails,fabianoleittes/rails,bogdanvlviv/rails,yawboakye/rails,utilum/rails,pvalena/rails,untidy-hair/rails,amoody2108/TechForJustice,hanystudy/rails,untidy-hair/rails,elfassy/rails,starknx/rails,Vasfed/rails,flanger001/rails,mathieujobin/reduced-rails-for-travis,mtsmfm/rails,Erol/rails,gfvcastro/rails,kamipo/rails,yasslab/railsguides.jp,felipecvo/rails,tgxworld/rails,yhirano55/rails,rbhitchcock/rails,rossta/rails,hanystudy/rails,gavingmiller/rails,ledestin/rails,palkan/rails,odedniv/rails,Sen-Zhang/rails,deraru/rails,esparta/rails,alecspopa/rails,kmayer/rails,vipulnsward/rails,notapatch/rails,rafaelfranca/omg-rails,gfvcastro/rails,mijoharas/rails,illacceptanything/illacceptanything,yhirano55/rails,vipulnsward/rails,voray/rails,untidy-hair/rails,pvalena/rails,baerjam/rails,yalab/rails,schuetzm/rails,betesh/rails,pvalena/rails,lcreid/rails,kaspth/rails,gcourtemanche/rails,joonyou/rails,illacceptanything/illacceptanything,amoody2108/TechForJustice,riseshia/railsguides.kr,iainbeeston/rails,illacceptanything/illacceptanything,aditya-kapoor/rails,illacceptanything/illacceptanything,sergey-alekseev/rails,felipecvo/rails,amoody2108/TechForJustice,yhirano55/rails,Sen-Zhang/rails,BlakeWilliams/rails,mtsmfm/railstest,koic/rails,iainbeeston/rails,ngpestelos/rails,bogdanvlviv/rails,mechanicles/rails,tjschuck/rails,voray/rails,fabianoleittes/rails,kamipo/rails,Vasfed/rails,kaspth/rails,stefanmb/rails,arunagw/rails,vipulnsward/rails,prathamesh-sonpatki/rails,Edouard-chin/rails,alecspopa/rails,ledestin/rails,Sen-Zhang/rails,gcourtemanche/rails,kddeisz/rails,koic/rails,xlymian/rails,mohitnatoo/rails,MichaelSp/rails,mathieujobin/reduced-rails-for-travis,notapatch/rails,rbhitchcock/rails,travisofthenorth/rails,rossta/rails,illacceptanything/illacceptanything