v5.3.0

Bug Fixes

• hairlines: support transparent and arbitrary colors in hairline-* utility (39848c5)
• overlays: hide closed overlays so Safari restores its translucent address bar (d5a89b4), closes #280
• react: prevent form-inputs crash from null in cls() (ab63e07)
• table: render iOS hairlines on cells so they position correctly in Safari (e8d1438), closes #279