ePiframe v1.7.0

Issues:

• Google OAuth 2.0 Update #56
• Comment is not taken from the copied photo #57
• ImportError: cannot import name 'safe_str_cmp' from 'werkzeug.security' #58
• [Feature Request]: HEIF/HEIC support #59
• Orientation / Rotation EXIF metadata seemingly not used #62
• Add possibility to rotate photo for horizontal frame #63

Pull requests:

• Update contants.py #60
• Force Werkzeug 2.0.0 #61