Updated package.json version

[FIX] fix a problem when a complex class with optional port drawing i…

…s used with NodeEditorGUILayout.DynamicPortList. By having an item that wasn't drawing the port, the method was throwing a KeyNotFoundException when reordering. (#262)

The fix detects if there isn't a port when swapping rects.

#144 Added option to disable tooltips

Unity 5.3 support

Fixed error on instanceportlists that aren't arrays

Faster editor caching and less error prone

Tooltip now shows value from GetValue instead of field variable

Allow dragging view with middle mouse button