This keeps the layout of the emoji fixed as much as possible.
Other changes:
* Fix width of each emoji container to static 52px
* Bump minimum width of right panel from 250px to 264px to match the
width in the figma
* Use normal font-weight for labels as per design
* Smaller vertical gap between emojis, again to match design
These icons are based on Feather as the original source, but they have various
tweaks applied, such as stroke width, color, etc. Hopefully the tweaked name
makes this more obvious in the future.
David Baker