Restore utf-8 compatibility for python 2
Restore utf-8 compatibility for python 2

ericdill/pyqtgraph,derricw/pyqtgraph,mpvismer/pyqtgraph,vallsv/pyqtgraph,JenSte/pyqtgraph,mgraupe/acq4,hiuwo/acq4,pmaunz/pyqtgraph,hiuwo/acq4,tropp/acq4,JenSte/pyqtgraph,mgraupe/acq4,nmearl/pyqtgraph,meganbkratz/acq4,gvalentine/pyqtgraph,acq4/acq4,acq4/acq4,derricw/pyqtgraph,Lx37/pyqtgraph,onlyjus/pyqtgraph,meganbkratz/acq4,vallsv/pyqtgraph,benvermaercke/pyqtgraph,petebachant/pyqtgraph,onlyjus/pyqtgraph,onlyjus/pyqtgraph,ddamiani/pyqtgraph,hiuwo/acq4,campagnola/acq4,carlomt/dicom_tools,Lx37/pyqtgraph,welshjf/pyqtgraph,meganbkratz/acq4,pbmanis/acq4,meganbkratz/acq4,mgraupe/acq4,gvalentine/pyqtgraph,campagnola/acq4,welshjf/pyqtgraph,ng110/pyqtgraph,pbmanis/acq4,petebachant/pyqtgraph,campagnola/acq4,wonkoderverstaendige/MausverPyler,acq4/acq4,hiuwo/acq4,mgraupe/acq4,ng110/pyqtgraph,tropp/acq4,duguxy/pyqtgraph,gvalentine/pyqtgraph,tropp/acq4,pbmanis/acq4,pbmanis/acq4,mgraupe/acq4,benvermaercke/pyqtgraph,ddamiani/pyqtgraph,stscieisenhamer/pyqtgraph,duguxy/pyqtgraph,tropp/acq4,campagnola/acq4,hiuwo/acq4,nmearl/pyqtgraph,jlombacher/pyqtgraph,ericdill/pyqtgraph,pmaunz/pyqtgraph,welshjf/pyqtgraph,benvermaercke/pyqtgraph,carlomt/dicom_tools,ericdill/pyqtgraph,wonkoderverstaendige/MausverPyler,stscieisenhamer/pyqtgraph,jlombacher/pyqtgraph,acq4/acq4,mpvismer/pyqtgraph,ddamiani/pyqtgraph