v0.7.0

Added

• Add type PrivateKey to wrap private keys when using Mbed TLS.
• Add types ua::SecurityLevel, ua::EndpointDescription, ua::MessageSecurityMode.
• Add method ClientBuilder::get_endpoints() to get remote server endpoints.
• Add method ClientBuilder::certificate_verification() and type ua::CertificateVerification.
• Add method ua::CertificateVerification::custom() and trait CustomCertificateVerification to allow custom certificate verification.

Changed

• Breaking: Bump Minimum Supported Rust Version (MSRV) to 1.80.
• Breaking: Change type Certificate to hold certificate without private key.
• Breaking: Use new types Certificate and PrivateKey instead of raw &[u8] in ClientBuilder::default_encryption(), ServerBuilder::default_with_security_policies(), and ServerBuilder::default_with_secure_security_policies().