[feature request] Change Tracker URLs and Source of .torrent in batch mode

[kdantas]

This software is excellent for creating .torrent of batch files. But, if the files are in the seedbox? Would it be possible to implement the option to change the Tracker URLs and the Source of .torrent files in batch mode? You can ask youself: what the purpose of this implementation? When we want to cross seeding files that are in the seedbox, we download the .torrent files from seedbox to the computer and after we need to change the Tracker URLs and the Source of .torrent files. There is a software that do this just one file at time, but it would be nice do this in batch mode.