Korean readings in unihan don't match up

[Max Rabkin]

<Taejo> tibid: unihan 零
<tibid> Taejo: '零' is CJK Unified Ideograph-96F6 (U+96F6), a letter with left-to-right directionality. It means zero; fragment, fraction; it is pronounced líng or lián (pinyin), 령 [lyeng] or 영 [lyen] (Korean), rei (Japanese on) or ochiru, furu or koboreru (Japanese kun).

영 is [yeng]. The issue is that the Unihan database has separate entries for Hangul and Yale romanization; they usually match but don't always. It's not clear which is authoritative (are yeng and lyen both correct here). It might be nice to use Revised Romanization instead of Yale, too (which would mean converting either Hangul or Yale to RR).