You were playing my unofficial Ren'Py port of this game. This is the official game thread you're posting in now. You'll have to wait until I update my Ren'Py port to be able to use your existing saves.
As far as versioning, it's typically like this:
Alpha versions (incomplete content)
0.8a
0.8.1a
0.8.2a
0.8.3a
Beta versions (all planned content implemented, but might have bugs)
0.8b
Full version complete
0.8 Final (or just 0.8, I forget how he does the final version)
For my Ren'Py port, I follow whatever version the dev uses, but I add a build number that is for showing any changes I make, such as fixes, improvements to Ren'Py functionality, etc.