chore: Update version to 0.3.0 and align changelog with .NET 10 target

Author: janb84

CHANGELOG.md

@@ -5,6 +5,15 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.3.0] - 2026-05-26
+
+### Breaking Changes
+- Retargeted the published package and all repo projects from `net9.0` to `net10.0`; consumers must build and run on .NET 10 SDK/runtime or stay on `0.2.x`
+
+### Changed
+- Updated the conformance test handler, examples, tests, and documentation to align with the .NET 10 target
+- Removed the handler's redundant `System.Text.Json` package reference now that it is provided by the framework target
+
 ## [0.2.0] - 2026-03-03
 
 ### Breaking Changes

README.md

@@ -10,7 +10,7 @@ This library uses [libbitcoinkernel](https://github.com/bitcoin/bitcoin/tree/mas
 
 | Package | Version | Description |
 |---------|---------|-------------|
-| **BitcoinKernel** | 0.2.0 | Managed wrappers and native bindings |
+| **BitcoinKernel** | 0.3.0 | Managed wrappers and native bindings |
 
 ```bash
 dotnet add package BitcoinKernel

src/BitcoinKernel/BitcoinKernel.csproj

@@ -8,7 +8,7 @@
 
     <!-- NuGet Package Metadata -->
     <PackageId>BitcoinKernel</PackageId>
-    <Version>0.2.0</Version>
+    <Version>0.3.0</Version>
     <Authors>JanB84</Authors>
     <Description>.NET bindings and managed wrappers for libbitcoinkernel. Provides direct access to Bitcoin Core consensus and validation logic with automatic memory management.</Description>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>