v1.6 - clarification

Webix JS
1

Great list of improvements in v1.6.

Can someone from support elaborate:

Improvments in Server side integrations

  1. “data in components can be updated from server side”
    What does this mean?

UI components

  1. “improved API for complex forms”
    Where can I find changes list?

New functionality

  1. “columns.optins accepts url of data feed”
    Where can I find documentation and/or XML example?
    Tried locally and on Code Snippet. No luck - ajax request gets cancelled, status code 0.

Updated functionality

  1. “xml data feeds for suggests”
    Where can I find documentation and/or XML example?

Thanks.