Just in case you were still needing an answer - if you had into the game files directory, inside the "www" folder you will see a "saves" folder. Just copy that and paste into the newer version's www folder. Be warned though, depending on what changed in the update you may find bugs occurring (e.g. saves from 1.0.2 played in 1.0.3 will cause the crow mauler to stop spawning outside of trying to save despite the "terrifying presence" messages appearing - although some people may actually prefer that!).
If you're having odd occurrences or crashes, you may want to consider starting a new game and/or deleting those saves. If you decide to report them, please remember to specify that you're using an older save file - this is considered a courtesy to game developers as it saves them from "chasing their own tail" trying to fix the problem ;) .