3.0:
- support for Windows (add network drive) and MacOS clients
- support Android 7+8 security system and external media
- close open waiting connections when clicking on "Disconnect"
- supports both WLAN and LAN at the same time, switch between URLs with button
2.0:
- Upload multiple files in one operation (needs Javascript)
- Share external SD-Cards on Android 5 and newer
- Allow to overwrite files which already exist
- Share server URL