Support unicode GUIDs.
Support unicode GUIDs.

* Add a deprecation comment for future comparisons
  against subclasses of basestring.

atsuyim/OpenBazaar,saltduck/OpenBazaar,Renelvon/OpenBazaar,matiasbastos/OpenBazaar,saltduck/OpenBazaar,bglassy/OpenBazaar,bglassy/OpenBazaar,yagoulas/OpenBazaar,im0rtel/OpenBazaar,rllola/OpenBazaar,rllola/OpenBazaar,kordless/OpenBazaar,mirrax/OpenBazaar,bglassy/OpenBazaar,freebazaar/FreeBazaar,matiasbastos/OpenBazaar,bglassy/OpenBazaar,must-/OpenBazaar,blakejakopovic/OpenBazaar,NolanZhao/OpenBazaar,habibmasuro/OpenBazaar,freebazaar/FreeBazaar,rllola/OpenBazaar,Renelvon/OpenBazaar,mirrax/OpenBazaar,yagoulas/OpenBazaar,saltduck/OpenBazaar,STRML/OpenBazaar,bankonme/OpenBazaar,yagoulas/OpenBazaar,dionyziz/OpenBazaar,Renelvon/OpenBazaar,akhavr/OpenBazaar,blakejakopovic/OpenBazaar,freebazaar/FreeBazaar,kordless/OpenBazaar,akhavr/OpenBazaar,kordless/OpenBazaar,STRML/OpenBazaar,tortxof/OpenBazaar,atsuyim/OpenBazaar,tortxof/OpenBazaar,matiasbastos/OpenBazaar,NolanZhao/OpenBazaar,habibmasuro/OpenBazaar,im0rtel/OpenBazaar,Renelvon/OpenBazaar,blakejakopovic/OpenBazaar,STRML/OpenBazaar,tortxof/OpenBazaar,im0rtel/OpenBazaar,must-/OpenBazaar,akhavr/OpenBazaar,akhavr/OpenBazaar,dionyziz/OpenBazaar,habibmasuro/OpenBazaar,blakejakopovic/OpenBazaar,akhavr/OpenBazaar,dionyziz/OpenBazaar,NolanZhao/OpenBazaar,yagoulas/OpenBazaar,atsuyim/OpenBazaar,must-/OpenBazaar,STRML/OpenBazaar,habibmasuro/OpenBazaar,freebazaar/FreeBazaar,matiasbastos/OpenBazaar,dionyziz/OpenBazaar,bankonme/OpenBazaar,im0rtel/OpenBazaar,mirrax/OpenBazaar,rllola/OpenBazaar,freebazaar/FreeBazaar,kordless/OpenBazaar,bankonme/OpenBazaar,must-/OpenBazaar,bankonme/OpenBazaar,tortxof/OpenBazaar,mirrax/OpenBazaar,dionyziz/OpenBazaar,NolanZhao/OpenBazaar,atsuyim/OpenBazaar,saltduck/OpenBazaar