• added image-path variable
• loading large nodes simultaneously (with worker) could break tree
• added numbering tp misc plugins (could be slow on large trees)
• added is_undetermined helper function
• added tie_selection option to checkbox (can now keep separate collections of checked and selected)
• fix for alternative JSON format and children_d not being populated
• fixed bug with unique firing an error when leaving a node with the same name
• refresh_node now correctly loads closed nodes
• fix for invalid IDs
• added force_text option to strip HTML
• _load_nodes without callback throws an error
• browserify compatible
• added option to forget state on refresh
• added realcheckboxes to misc plugins