Fixes #75. Implemented .successors and .predecessors for CFGNodes.
Fixes #75. Implemented .successors and .predecessors for CFGNodes.

haylesr/angr,terry2012/angr,lowks/angr,lowks/angr,angr/angr,fjferrer/angr,avain/angr,haylesr/angr,chubbymaggie/angr,iamahuman/angr,xurantju/angr,zhuyue1314/angr,chubbymaggie/angr,GuardianRG/angr,f-prettyland/angr,xurantju/angr,cureHsu/angr,f-prettyland/angr,schieb/angr,avain/angr,GuardianRG/angr,iamahuman/angr,mingderwang/angr,f-prettyland/angr,angr/angr,axt/angr,chubbymaggie/angr,schieb/angr,axt/angr,mingderwang/angr,fjferrer/angr,terry2012/angr,tyb0807/angr,angr/angr,iamahuman/angr,axt/angr,tyb0807/angr,schieb/angr,tyb0807/angr,cureHsu/angr,zhuyue1314/angr