I have updated the plugin.
It now uses DOpus-Scripting-Extensions project, so you will have to install it on your PC first.
But it allows this plugin to be fast enough to be usable.
You can download the latest version of this plugin at Releases page. Don't forget to install DOpus-Scripting-Extensions first.
I also had to remove extra features like text files BOM and binary architecture detection because it would make the plugin very slow. For encoding with BOM detection, there is another plugin Text file encoding column 