Keepass2Android 1.06f
* Switch to ykDroid instead of YubiChallenge as app for Yubikey Challenge-Response.
* Implement support for KeepassXC-style Challenge-Response. Note: Database format must be KDBX4!
* Refuse to load trashed files from Google Drive
* Switch TLS implementation for FTPS, add workaround to JSch bug with servers supporting gssapi-with-mic
* bug fixes