New in 1.6.6a
★ Warn users of "paid" apps that they will likely be removed at some point and that they should download the free one to make sure they get updates.

New in 1.6.6
★ Fix bug while scrambling some JPEGs (like from Huawei devices)
★ Remove even more JPEG (possible) metadata (all APPn from JPEG spec).

New in 1.6.5
★ Fix metadata leak bug. *If* scrambling failed with an IOException, the original image was shared.
★ (Re-)Add PNG metadata removal

