4.0.0-alpha.1

• Updated dependencies.
• Better resolution of the original source location - You can more successfully use url() in variables and mixins. Dependencies now accept a wider range and explicit dependency on rework and rework-visit has been removed.
• The engine option is deprecated which means the old rework engine is deprecated.
• The keepQuery behaviour is now the default, the keepQuery option has been removed.
• The absolute option has been removed.
• The join option has changed.