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.
Remove icon categories to simplify npm package.
BREAKING CHANGE: The path to individual SVG files has changed. All SVGs now live on the same level
inside the `icons` directory. For example, `icons/core/home.svg` is now `icons/home.svg`.