Support React Free Style @ 11

Added

• Upgrade react-free-style d5bc08e

React Free Style Peer Dependency

Fixed

• Export placeholder styles
• Move react-free-style to peer dependency

Use Atoms

Changed

• Use @borderlesslabs/atoms
• Make default button "unstyled"
• Update to react-free-style@10
• Make spinner skinnier by default

Added

• Allow nested CSS styles without object spread
• Enable Webpack tree shaking
• Add :invalid input focus outline
• Add dropdown component
• Add input size utilities
• Add display names to more styled elements
• Improve border behavior for tables
• Add placeholder content loader support