This was originally going to be a part of 0.7. The idea is to tag the version number, so that if the format of the export ever changes, updates can be applied to the package to maintain backwards compatibility. E.g. suppose the format changed in future versions 1.1 and 1.3, a 0.7 => 1.1 updater and a 1.1 => 1.3 updater can be applied.

This should be changed to whatever version this is going to be included in and only change when the export format changes.