Is it possible to create an xpath expression with non-Latin letters?

[sgvx]

ХPath expression with non-latin letters throws an error:

f := strings.NewReader(`<?xml version="1.0" encoding="utf-8"?>
	<data_list>
		<data>
			<Σειρά>1</Σειρά>
		</data>
		<data>
			<Σειρά>2</Σειρά>
		</data>
	</data_list>
`)
doc, err := xmlquery.Parse(f)
if err != nil {
	log.Fatal(err)
	return
}
expr, err := xpath.Compile(`Σειρά`)
if err != nil {
	log.Fatal("Compile error: ", err)
}
...

Compile error: Σειρά has an invalid token.
exit status 1

Is it possible to compile an xpath expression with non-latin letters?

[lsimeonov]

Submitted a PR #100