Strange results for Chinese with Japanese

[71sprite]

To reproduce:

package main

import (
	"github.com/pemistahl/lingua-go"
	"fmt"
)

func main() {
	detector := lingua.NewLanguageDetectorBuilder().
		FromAllLanguages().
		Build()

	text := "上海大学是一个好大学. わー!"
	if language, exists := detector.DetectLanguageOf(text); exists {
		fmt.Println(language.String()) // Japanese
	}
}

Expected: Get Chinese for this case.

https://github.com/pemistahl/lingua-go/blob/main/detector.go#L467

It's because here return Japanese if any japaneseCharacterSet char exists, I'm unsure if this is intended.

Thanks for awesome work!