Multiple people have asked for previous versions of the game and I have told them all the same thing. I am not distributing previous versions of the game since the game is still in its alpha phase. The reason for this is that some of the older versions are incredibly buggy and crash (a lot). I also wouldn't want to receive bug reports from older versions that may have been fixed in a newer version. Feel free to personally keep all the versions you have downloaded, I can't stop you there, but as the developer I am not going to be handing out the previous version downloads just yet.
That being said, I have left v1.0 up which was the game jam version. Also, when the game gets a full release, I might also release a full release of every single version I have worked on (I have a large archive by now and its only gonna get larger).
Thanks for asking!