I just updated to the current version and i lost my save. It hasn't done this before. Was this planned or was i simply unlucky?
Which version did you update from?
There was once such situstion, when upgrading from 0.2.2.8 to 0.3 that save data had changed and players had to start anew, there was no such occurrence since then
Did you follow steps from "install instructions" section?
If you did and lost your save - unlucky, something must have gone wrong
If you didn't - it's your fault