add note about libyaml
add note about libyaml
kevin1024/vcrpy,IvanMalison/vcrpy,ByteInternet/vcrpy,ByteInternet/vcrpy,yarikoptic/vcrpy,aclevy/vcrpy,agriffis/vcrpy,graingert/vcrpy,kevin1024/vcrpy,poussik/vcrpy,graingert/vcrpy,mgeisler/vcrpy,gwillem/vcrpy,poussik/vcrpy,bcen/vcrpy