vcs: add documentation to VersionControl class
vcs: add documentation to VersionControl class

squidsoup/pip,jamezpolley/pip,KarelJakubec/pip,James-Firth/pip,jasonkying/pip,erikrose/pip,haridsv/pip,jythontools/pip,willingc/pip,zorosteven/pip,zvezdan/pip,ncoghlan/pip,zorosteven/pip,pjdelport/pip,rouge8/pip,RonnyPfannschmidt/pip,nthall/pip,jythontools/pip,jmagnusson/pip,pfmoore/pip,supriyantomaftuh/pip,fiber-space/pip,sbidoul/pip,squidsoup/pip,Gabriel439/pip,KarelJakubec/pip,habnabit/pip,James-Firth/pip,natefoo/pip,chaoallsome/pip,caosmo/pip,mindw/pip,mujiansu/pip,graingert/pip,erikrose/pip,jythontools/pip,xavfernandez/pip,KarelJakubec/pip,luzfcb/pip,jmagnusson/pip,dstufft/pip,patricklaw/pip,jmagnusson/pip,graingert/pip,h4ck3rm1k3/pip,jamezpolley/pip,tdsmith/pip,patricklaw/pip,natefoo/pip,sigmavirus24/pip,zvezdan/pip,luzfcb/pip,blarghmatey/pip,prasaianooz/pip,prasaianooz/pip,wkeyword/pip,atdaemon/pip,davidovich/pip,techtonik/pip,blarghmatey/pip,yati-sagade/pip,Carreau/pip,caosmo/pip,jasonkying/pip,haridsv/pip,qbdsoft/pip,ncoghlan/pip,nthall/pip,zenlambda/pip,alex/pip,mindw/pip,atdaemon/pip,alex/pip,mujiansu/pip,alex/pip,techtonik/pip,blarghmatey/pip,benesch/pip,qbdsoft/pip,yati-sagade/pip,esc/pip,rouge8/pip,ncoghlan/pip,zenlambda/pip,ChristopherHogan/pip,zorosteven/pip,xavfernandez/pip,msabramo/pip,h4ck3rm1k3/pip,jasonkying/pip,yati-sagade/pip,rbtcollins/pip,rbtcollins/pip,pypa/pip,harrisonfeng/pip,dstufft/pip,wkeyword/pip,habnabit/pip,pradyunsg/pip,esc/pip,benesch/pip,sigmavirus24/pip,fiber-space/pip,habnabit/pip,harrisonfeng/pip,zenlambda/pip,tdsmith/pip,luzfcb/pip,mujiansu/pip,tdsmith/pip,pjdelport/pip,zvezdan/pip,davidovich/pip,benesch/pip,jamezpolley/pip,dstufft/pip,wkeyword/pip,msabramo/pip,ianw/pip,Gabriel439/pip,mindw/pip,supriyantomaftuh/pip,xavfernandez/pip,esc/pip,ChristopherHogan/pip,chaoallsome/pip,ianw/pip,caosmo/pip,atdaemon/pip,davidovich/pip,techtonik/pip,h4ck3rm1k3/pip,pradyunsg/pip,haridsv/pip,James-Firth/pip,harrisonfeng/pip,Carreau/pip,sbidoul/pip,RonnyPfannschmidt/pip,qbdsoft/pip,graingert/pip,squidsoup/pip,willingc/pip,sigmavirus24/pip,ChristopherHogan/pip,Gabriel439/pip,willingc/pip,prasaianooz/pip,chaoallsome/pip,natefoo/pip,fiber-space/pip,nthall/pip,rouge8/pip,pjdelport/pip,RonnyPfannschmidt/pip,erikrose/pip,pfmoore/pip,supriyantomaftuh/pip,pypa/pip,rbtcollins/pip