0.0.7

Added

• Readonly mode. yukai-w
• Offset position to dropped item position. phlickey
• snapToGrid and gridSize config options. msteinmn
• validateLink config function. msteinmn
• misc other fixes. msteinmn
• Config object that is accessible by all components and actions.

Breaking

• Changed the callbacks / action type signatures so they are always functions with a single object param - hopefully preventing some future breaking changes. If you use custom callbacks, these will need to be updated. New type interface