droppable

Describe the bug

When using the Swap plugin, it's impossible to cancel a swap once the swap threshold has been met for an item. You can't drag the item back to its original place to prevent a swap. This happens with or without the revertOnSpill: true option.

To Reproduce
Steps to reproduce the behavior:

1. Go to https://sortablejs.github.io/Sortable/#swap
2. Drag "Item 1" to h

react-sortable-hoc provides the native event on the onSortEnd callback, that makes it trivial to know which kind of input method was used.

How can we tell from the onDragEnd handler if a drag/sort was performed using the keyboard, mouse, or touch?

Version: 2.6.0
Angular 4.3.5
AngularCli: 1.4.0-rc.1

When running on universal I get the following error

ERROR TypeError: this.el.nativeElement.querySelector is not a function
    at Draggable.getDragHandleElement (C:\dev\git_clones\app\node_modules\ng2-drag-drop\src\directives\draggable.directive.js:136:49)
    at Draggable.applyDragHandleClass (C:\dev\git_clones\app\node_modules\ng