add filterExclude and handle parameters to draggable
add index to readme
move docs to the wiki and out of the readme
move start event fire to when the mouse actually starts moving
move methods to 'this' rather than closure, for better memory handling.  add new add/remove/toggle Drag/Drop methods.
tests for new add/remove/toggle Drag/Drop methods.
Sorting intersecting targets based on distance.

This commit fixed/enhances jsPlumb drop behaviour: https://github.com/sporritt/jsPlumb/issues/261
The new connection gets created to the nearest endpoint to the drop position.
dont destroy a drag/drop if it does not appear to be owned by this instance of katavorio
Merge branch '0.4' of github.com:tikri/katavorio into tikri-0.4

Conflicts:
	src/katavorio-0.4.js
Merge branch 'tikri-0.4' into 0.4
fix order of operations on drag start...the event is fired before the mark command
less zealous cleanup on destroy