move semantic version comparisons into separate class
move semantic version comparisons into separate class

mahori/brew,tonyg/homebrew,gregory-nisbet/brew,reelsense/brew,nandub/brew,reelsense/brew,mgrimes/brew,reitermarkus/brew,maxim-belkin/brew,JCount/brew,hanxue/linuxbrew,sjackman/homebrew,muellermartin/dist,alyssais/brew,rwhogg/brew,nandub/brew,reitermarkus/brew,mahori/brew,JCount/brew,alyssais/brew,DomT4/brew,aw1621107/brew,aw1621107/brew,alyssais/brew,Linuxbrew/brew,hanxue/linuxbrew,gregory-nisbet/brew,pseudocody/brew,claui/brew,pseudocody/brew,EricFromCanada/brew,MikeMcQuaid/brew,jmsundar/brew,nandub/brew,claui/brew,amar-laksh/brew_sudo,bfontaine/brew,Homebrew/brew,muellermartin/dist,reitermarkus/brew,konqui/brew,palxex/brew,tonyg/homebrew,maxim-belkin/brew,vitorgalvao/brew,Homebrew/brew,jmsundar/brew,EricFromCanada/brew,pseudocody/brew,bfontaine/brew,maxim-belkin/brew,DomT4/brew,MikeMcQuaid/brew,vitorgalvao/brew,mgrimes/brew,zmwangx/brew,tonyg/homebrew,Homebrew/brew,jmsundar/brew,Homebrew/brew,Linuxbrew/brew,JCount/brew,nandub/brew,ilovezfs/brew,sjackman/homebrew,ilovezfs/brew,claui/brew,amar-laksh/brew_sudo,claui/brew,ilovezfs/brew,MikeMcQuaid/brew,Linuxbrew/brew,vitorgalvao/brew,reelsense/brew,sjackman/homebrew,MikeMcQuaid/brew,DomT4/brew,EricFromCanada/brew,EricFromCanada/brew,reitermarkus/brew,zmwangx/brew,konqui/brew,mahori/brew,mahori/brew,bfontaine/brew,rwhogg/brew,konqui/brew,palxex/brew,palxex/brew,JCount/brew,konqui/brew,aw1621107/brew,amar-laksh/brew_sudo,mgrimes/brew,muellermartin/dist,DomT4/brew,sjackman/homebrew,vitorgalvao/brew,Linuxbrew/brew,zmwangx/brew,rwhogg/brew,gregory-nisbet/brew,hanxue/linuxbrew