Add Attributes API to release notes
Add Attributes API to release notes

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