TL;DR
Enable everyone, who bought the game to doownload whatever Version of the game they want to, in order to enable replaying any old saves.What ?
Enable everyone, who bought the game to doownload whatever Version of the game they want to. (0.15.01 to 0.15.34 and so on). Or at least do it for all Versions you called stable.I am specifically interested in using 0.15.33, as that is the Version my replay was recorded in.