2019-07-01 5.3OpenKeychain 5.3 Update
* Use keys.openpgp.org as default keyserver
5.2
* Improved key import from clipboard
5.1
* Support for Ledger Nano S
* Support Web Key Directory (WKD) search
* Fixed potential API security issue
5.0
* Improved Autocrypt support
4.9
* Curve25519 support
* Improved support for security tokens