Most of the tabs are now switched to a new internal handler that will support a multi-file interface. Meanwhile, since this has 11 new features now implemented, here is a 1.6.1. The list of addressed issues can be found on the download link by clicking the "Addressed Issues" symbol for this release.

Update: updated to 1.6.1.6, which has all tabs modernized as they'll appear in FA 2 now.