Octicons

- Breaking changes in `octicons_react` [225](https://github.com/primer/octicons/pull/225)
- After the initial release of octicons_react https://github.com/primer/octicons/releases/tag/v7.4.0, we needed to rename the scope of the package. Due to some deployment conflicts in our pipelines.

- This release marks the first official version of Octicons for React! Check out the `github/octicons-react` package on npm for more info, or peruse the long-running PR [222](https://github.com/primer/octicons/pull/222).
- CI status is now reported to the `design-ops` Slack channel
- Jekyll Octicons has moved in this repo from `lib/jekyll-octicons` to `lib/octicons_jekyll`

- Fix for heart icon https://github.com/primer/octicons/pull/211
- Adding an archive icon created by colinkeany
- Fixes https://github.com/primer/octicons/issues/182
- Fixed versioning strategy https://github.com/primer/octicons/pull/208

Archived releases

- Removing `file-text` and `mail-reply` icons. Use `file` and `reply` respectively.
- Removing spritesheet calls and `toSVGUse` method.

Fixes:

- Typo `kebab-veritcal` becomes `kebab-vertical`

Added:

- `kebab-horizontal` and `kebab-vertical` icons
- Polyfill for the `Object.assign` function

Removes:

- Removing a duplicate `ellipses` icon from the set. Use `ellipsis` instead.