1. share old versions because everyone wants old versions because they work
2. fix new versions so there are newer versions with better features, better functionality, can be used 32-bit 64-bit on macos, windows, linux, and even surge-related regular-surge-bugs get fixed.
i pick option number 2.
if you find any issues with Surge, just report them to http://github.com/kurasu/surge/issues and open a new ticket. that way the current devs that are helping with the opensource project Surge will be able to fix them eventually, and that way everyone has a better, newer, more functional Surge.
why look back?