[Pharo-project] Getting and loading each version of a package? (Gofer?)

Hi guys. I could try to find it myself but I am sure I will spend a lot of time and you may be able to help me. In summary, I want a script (possible with Gofer) that can iterate and load from Fuel package version XXX to YYY, fetching and loading each of the existing version between XXX and YYY and let me executing something for each of the version. Is that possible? Thanks a lot in advance, -- Mariano http://marianopeck.wordpress.com