Using 'utf-8' codec to open python 3 scripts in bokeh app (#8202)
Using 'utf-8' codec to open python 3 scripts in bokeh app (#8202)

* Read python 3 script with utf-8 encoding

* add comment to ScriptHandler

* add link to PR

jakirkham/bokeh,timsnyder/bokeh,stonebig/bokeh,ericmjl/bokeh,jakirkham/bokeh,dennisobrien/bokeh,jakirkham/bokeh,ericmjl/bokeh,ericmjl/bokeh,timsnyder/bokeh,mindriot101/bokeh,bokeh/bokeh,mindriot101/bokeh,dennisobrien/bokeh,stonebig/bokeh,stonebig/bokeh,dennisobrien/bokeh,ericmjl/bokeh,bokeh/bokeh,dennisobrien/bokeh,jakirkham/bokeh,dennisobrien/bokeh,timsnyder/bokeh,timsnyder/bokeh,ericmjl/bokeh,bokeh/bokeh,mindriot101/bokeh,timsnyder/bokeh,stonebig/bokeh,jakirkham/bokeh,mindriot101/bokeh,bokeh/bokeh,bokeh/bokeh