Every single time they release an update it counts as a new "release" and you have to pay again. For example, if you buy version 0.3.3 and they release version 0.3.4 the next day, you gotta buy that version as well
New purchases are only required for the major monthly releases :D. If we make a patch to this release (0.136.1 for instance) it'd be free for anyone who owns 0.136.0. We do this in the case of major issues, but new monthly content releases are independent and require purchasing.
