Merge pull request #486 from googlefonts/u16

U16

Unicode 15

Unicode 14.0

Merge pull request #355 from googlefonts/design_update

Design update

Merge branch 'master' of github.com:googlefonts/noto-emoji

Merge pull request #312 from googlefonts/emoji13

Emoji 13 assets

Emoji 12.1 svg & png files