Pin html5lib to a working version.
Pin html5lib to a working version.

OpenBazaar/Network,OpenBazaar/OpenBazaar-Server,cpacia/OpenBazaar-Server,OpenBazaar/Network,cpacia/OpenBazaar-Server,saltduck/OpenBazaar-Server,OpenBazaar/OpenBazaar-Server,saltduck/OpenBazaar-Server,saltduck/OpenBazaar-Server,OpenBazaar/OpenBazaar-Server,OpenBazaar/Network,cpacia/OpenBazaar-Server