3.0.0-beta2

Thanks to everyone for reporting, here is a list of fixed issues:

• alternative JSON format works with types
• most functions did not work correctly when arrays of nodes were passed in
• multitree drag n drop now works as expected
• renaming a node did not allow mouse interaction (could not click on input field)
• there was a huge bug with node li_attr being shifted to the next node
• html is now handled properly (in titles)
• added set_id function