Allow extraction of JPA 1.3 files on 32-bit builds of PHP. In the extremely unlikely case that you have a 32-bit build of PHP you will now be able to extract JPA 1.3 archives, as long as individual files included in the backup archive are no bigger than 2 GiB (that's the hard file size limit on 32-bit builds of PHP). Everyone else, i.e. 99.9999% of our users, will see absolutely no difference whatsoever. Yes, this is a feature targeting less than a couple dozen or so users out there with very specialised use cases for 32-bit builds of PHP on their custom servers.
Bug fixes and minor improvements. Please check the changelog below.