Release 1.5.0RC1

features:
- support new provider config API (beta)
- allow to setup provider using an invite code and via an obfuscated proxy
- new circumvention settings user interface
- Add QR code scanning for invite code
- in-app language picker
- update openvpn and openssl
- updated translations (<3<3<3 -> translators)
bugfix:
- fix support for ed25519 private VPN keys