- [Win] Build with Visual Studio 2019 instead of MinGW
- [Win/Mac] Upgrade Qt version to 5.15.1 (which supports TLS 1.3)
- Add V4 encryption library support, which will be available in server 8.0
Note: v4 encryption format fixes a bug in v3 format that uses AES128 for encryption, which is not secure in modern standard. Compared to the currently most used v2 format, v3/v4 encryption use separate encryption salt for each library. v2 format uses AES256, so it’s not affected by this bug.