v0.9.0

What's Changed

• Update base64 to 0.21 by @AgeManning in #32
• Address clippy lint by @divagant-martian in #36
• serde(with = "SerHex::") NodeId by @KolbyML in #34
• do not turn on serde (from hex) when the serde feature is not on by @divagant-martian in #37
• Serialize NodeId with 0x prefix by @KolbyML in #38
• Version bump to v0.9.0 by @AgeManning in #41

Full Changelog: v0.8.1...v0.9.0