Merge pull request Sneezry#35 from Sneezry/develop

change version to 4.17

Merge pull request Sneezry#27 from Sneezry/develop

bugfix

release 4.15 for issue Sneezry#17

scan qr code with devicePixelRatio for retina displays

Add resize menu

fixed issue Sneezry#12

4.10

Add HOTP support