I've finished implementing Steam Cloud support. Now your profiles, settings and future save data will stay in sync across all of your computers on Windows, Mac and Linux. Once the save system is completed you'll no longer have to juggle around those future save files manually, you'll be able to pickup your game anywhere on the go and Steam will make sure your game's data is all synced up and ready to use before you play.
Please note if you're not using InDev 12 Unstable 2 or later Steam Cloud support will not function yet. Although InDev 11 users don't really have anything to save at the moment, so that should not really be a problem. :)