v1.0.0-beta.4

Added

• Default Draggable plugins get exposed statically on Draggable.Plugins
• Default AutoScroll plugin for Draggable, which auto scrolls containers/viewport while dragging
• yarn watch task for auto-building the library
• source:original class option for Draggable
• Draggable#getDraggableElementsForContainer method, which returns all draggable elements for a given container
• MirrorCreateEvent, which allows for canceling mirror creation
• AbstractPlugin to use as Base class for all Draggable plugins
• More test coverage

Changed

• Fixed Sortable sort logic by excluding mirror and original source elements in calculations
• Draggable appendTo option now uses sources parent element as default, instead of document.body
• Draggable appends over classes after triggering over/out events
• Draggable appends source into empty containers
• Mirrors margin gets removed on creation in the mirror plugin
• Fix for mirror when drag start gets canceled
• Fixes memory leak in Draggable when calling destroy()
• Fixes race condition for the source:placed class
• Changed AbstractEvent#_canceled to use symbols for private instance variables
• Some fixes for the documentation READMEs