[Most-ai-contest] output formatter revision

[謝尊安]

Dear all,
參考date-duration module作法，新增西元轉民國功能

-- 
Tsun-An Hsieh
tel:      +886 975 329907 <+886%20975%20329%20907>
email:  pups003c於gmail.com
Institute of Networking and Multimedia, CSIE, National Taiwan University,
Taiwan
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