chore: Update CHANGELOG.md for 0.5.0

Author: ValuedMammal

CHANGELOG.md

@@ -7,11 +7,26 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.5.0]
+
+### Fixed
+
+- fix: Respect null columns when reading `tx` table
+
+### Changed
+
+- schema: Add migration `0002_schema.up.sql` [#14](https://github.com/bitcoindevkit/bdk-sqlite/pull/14)
+ 
+**This release includes a migration that changes the database schema in 2 ways**:
+
+- The `block` table's PRIMARY KEY is changed to `height`; previously it was `(height, hash)`
+- The type of `anchor.block_hash` column is changed to TEXT; previously it was INTEGER
+
 ## [0.4.3]
 
 ### Fixed
 
-- fix: Avoid inserting rows of duplicate height into `block` table #9
+- fix: Avoid inserting rows of duplicate height into `block` table [#9](https://github.com/bitcoindevkit/bdk-sqlite/pull/9)
 
 ### Changed
 
@@ -20,3 +35,4 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 [unreleased]: https://github.com/bitcoindevkit/bdk-sqlite/compare/0.4.3...HEAD
 [0.4.3]: https://github.com/bitcoindevkit/bdk-sqlite/releases/tag/0.4.3
+[0.5.0]: https://github.com/bitcoindevkit/bdk-sqlite/releases/tag/0.5.0