Prepare release 0.4.0 (#116)

Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.4.0] - 2023-09-15
+
 ### Added
 
 - Add `sign` and `verify` methods by @silverpill ([#105](https://github.com/monero-rs/monero-rpc-rs/pull/105))
@@ -139,7 +141,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Daemon RPC methods:
   - `get_transactions`
 
-[Unreleased]: https://github.com/monero-rs/monero-rpc-rs/compare/v0.3.2...HEAD
+[Unreleased]: https://github.com/monero-rs/monero-rpc-rs/compare/v0.4.0...HEAD
+[0.4.0]: https://github.com/monero-rs/monero-rpc-rs/compare/v0.3.2...v0.4.0
 [0.3.2]: https://github.com/monero-rs/monero-rpc-rs/compare/v0.3.1...v0.3.2
 [0.3.1]: https://github.com/monero-rs/monero-rpc-rs/compare/v0.3.0...v0.3.1
 [0.3.0]: https://github.com/monero-rs/monero-rpc-rs/compare/v0.2.0...v0.3.0

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "monero-rpc"
-version = "0.3.2"
+version = "0.4.0"
 authors = ["Artem Vorotnikov <[email protected]>", "Monero Rust Contributors"]
 edition = "2021"
 exclude = ["/test"]