* Bugfix: Fixed crash which occurred instantly after
starting (on some devices).
* Bugfix: Don't save key files with bad characters.
Thanks to Pascal for fixing this issue.
* Fixed SAK issue of Sony's Xperia Z3 in combination with emulated tags.
Thanks again to "bildin" and to "moscowneversleeping" for reporting,
testing and patching this issue.
* OnePlus One, Samsung Galaxy Grand Prime, Samsung Galaxy S5 mini,
Sony Xperia Z2 (some models), Google Nexus 9, Jiayu S3,
LG G4, Samsung Galaxy A5, ZTE Nubia Z7 Max (NX505J),
Samsung Galaxy S6, Samsung Galaxy S6 Edge, Asus Zenfone 2,
Google Nexus 6, Motorola's Moto X (2014, 2ed gen.) are not supported.