Removed missing link to roadmap and updated Egghead link.

Co-authored-by: Cole Bemis <colebemis@github.com>

Added 3 division icons (also knows as an obelus).  One by itself, one with a circle around it, and one with a square around it.  These are meant to compliment plus, minus, and x icons.

Thank you, @drinking-code! 🙌 

The roadmap was out of date. Let's track future work using GitHub issues instead.

We use lines with 0 length to represent dots. However, lines with 0 length don't render in Figma. To
workaround this issue, we give those lines a length of 0.01 instead of 0.

Bumps [eslint-plugin-prettier](https://github.com/prettier/eslint-plugin-prettier) from 2.5.0 to 2.7.0.
- [Release notes](https://github.com/prettier/eslint-plugin-prettier/releases)
- [Changelog](https://github.com/prettier/eslint-plugin-prettier/blob/master/CHANGELOG.md)
- [Commits](https://github.com/prettier/eslint-plugin-prettier/compare/v2.5.0...v2.7.0)
Signed-off-by: dependabot[bot] <support@dependabot.com>

Add x-octagon icon

Add Figma icon

Bumps [extend](https://github.com/justmoon/node-extend) from 3.0.1 to 3.0.2. **This update includes security fixes.**
- [Release notes](https://github.com/justmoon/node-extend/releases)
- [Changelog](https://github.com/justmoon/node-extend/blob/master/CHANGELOG.md)
- [Commits](https://github.com/justmoon/node-extend/compare/v3.0.1...v3.0.2)
Signed-off-by: dependabot[bot] <support@dependabot.com>

Update edit icons