1.6.0 alpha build
updates to changelog
remove bootstrap from demo
remove bootstrap from demo
reorganise demo/test links in jump page
update katavorio and mottle
remove jsPlumb.CurrentLibrary refs
update editors to work with recent support method reorg
updates to cater for newly removed jsPlumbUtil.removeElement method
finish off drag support, add multi drag support, add trigger support
remove removeElement method, updates to some draggable methods to use selectors
remove clampToGrid, copyValues.  add extra param to extend to support filtering values to copy. remove removeElement method. remove group/groupEnd/time/timeEnd methods
cleanup, remove unused stuff
update apidocs to yuidoc, build file changes to come
switch to yuidoc, remove doc generation from here and move to jekyll site
add theme for yuidocs