emoji.src was a seed of thirty emoji. cldr2emoji now generates it from
Unicode's emoji-test.txt (Emoji 17.0) and CLDR 48.2.0's annotations: the
1914 fully-qualified emoji without their skin-tone variants, each with
its names and keywords in the three languages, so that a search finds
what fcitx5's emoji picker finds. The data is under the Unicode License,
added to LICENSES.
