DoD for feature

First draft:

• Should match specs (eg. either the Web UI Kit or any pattern from the WAI — or both…)
• Docs added:
  • including the "Sass" part using scss-docs shortcode
  • in Cheatsheet / Cheatsheet RTL examples
  • in /about/overview/#custom-components if it is a new Orange custom component
  • in /gettings-started/introduction/#components if it is a new Orange custom component that requires JavaScript (and Popper)
  • in /customize/overview#csps-and-embedded-svgs if it is a new Orange custom component that includes embedded SVGs in our CSS
• Check (and fix) RTL version
• Run linters
• Run compilers
• Tests added for JS-side
• Run tests
• Cross-browser test:
  • Firefox ESR
  • Latest Edge, Chrome, Firefox, Safari
  • iOS Safari
  • Chrome & Firefox on Android
• Clean up the branch using rebase -i
• Commited with feat(…): … message
• Mention it in Migration Guide (if back-from-v4): renamed variables, changes in markup requirement, etc.