detection of zh_TW and zh_CN

[vandenoever]

This text, copied from http://www.gov.tw is detected as being zh.
駕駛執照替代役水質補(捐)助資訊出國疫苗地價稅牌照稅退休金技能檢定生育補助交通事故天災事變生活扶助健康檢查消費者身心障礙健康保險勞工保險教育補助
It would be nice if the detection was more specific (zh-TW).
The documentation claims to detect "zh": Chinese and "zh-TW" Chinese (Taiwan).

[dbw9580]

Same issue here. It seems to fail to differentiate between zh-CN(Simplified Chinese) and zh-TW(Traditional Chinese).