Maintain emoji line-height in it's context to avoid cut-off,
(Windows 10) http://i.imgur.com/xmdOLgv.png
This also allows us to get rid of the small bodge for the cut-off in
Safari
- gl_emoji for falling back to image/css-sprite when the browser
doesn't support an emoji
- Markdown rendering (Banzai filter)
- Autocomplete
- Award emoji menu
- Perceived perf
- Immediate response because we now build client-side
- Update `digests.json` generation in gemojione rake task to be more
useful and include `unicodeVersion`
MR: !9437
See issues
- #26371
- #27250
- #22474
