Best I can see is sometime after 0.9.4 I believe. Seems to have changed between commits and not specific release versions. If there's a better methodology for finding the exact change I'm not aware of it, at least not for this project, All I could find was this updated commands list which isn't even...

I realize this may be redundant for many as most people who are probably using rtorrent / rutorrent / filebot script post processing are likely using a paid seedbox, which in turn is likely using older versions of rtorrent, but I thought I'd toss this information on here since it's documented exactl...