v0.7.0

Fix:

• Correct handshake hash upon last read (thanks @kuzmordas in #15)
• Nonce decoding

Build:

• Use Java 8
• Fix POM configuration
• Fix koverReport syntax

Chore:

• Bump versions: jvm, plugin.serialization, kotlinx-serialization-json, kover

Docs:

• Add Maven Central data to README
• Fix dead link in README
• Add pre-release note to SECURITY

Full Changelog: v0.6.0...v0.7.0