Feature #87: Request for inclusion: stopmotion
Stopmotion files *.sto are opened by Xarchiver
Stopmotion files have an extension *.sto but are indeed tar archive files:
$ file -i test-stopmotion.sto
As a result they are opened by Xarchiver instead of Stopmotion. We need to declare sto files as a sub-class of tar files to be opened by Stopmotion.