Advanced Document Templating, Freemarker component update

I want to ask if someone tried to update Freemarker template component of ADT plugin. Currently inside is version 2.3.20. The newest version of that component is 2.3.28 and has a lot better functional support for creating DOCX templates. Simple replace of .jar file or any other similar approach inside plugin does not work. So if anyone can point me in right direction what needs to be done to have it work with newer version of Freemarker.

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