Update changelog for 0.0.1 release (#36)

Author: rauhul

CHANGELOG.md

@@ -1,24 +1,50 @@
 # CHANGELOG
 
-<!-- 
-Add new items at the end of the relevant section under **Unreleased**.
--->
+All notable changes to this project will be documented in this file.
 
-This project follows semantic versioning. While still in major version `0`, source-stability is only guaranteed within minor versions (e.g. between `0.0.3` and `0.0.4`). If you want to guard against potentially source-breaking package updates, you can specify your package dependency using `.upToNextMinor(from: "0.0.1")` as the requirement.
+This changelog's format is based on
+[Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
+
+This project follows [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+While still in major version `0`, source-stability is only guaranteed within
+minor versions (e.g. between `0.0.3` and `0.0.4`). If you want to guard against
+potentially source-breaking package updates, you can specify your package
+dependency using `.upToNextMinor(from: "0.0.1")` as the requirement.
 
 ## [Unreleased]
 
 *No changes yet.*
 
+<!-- 
+Add new items at the end of the relevant section under **Unreleased**.
+-->
+
 ---
 
-## [0.0.1] - 2023-9-12
+## [0.0.1] - 2023-11-17
 
 - **Swift MMIO** initial release.
 
----
+### Additions
 
-This changelog's format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
+- Introduces `@RegisterBank` and `@RegisterBank(offset:)` macros, enabling you
+  to define register groups directly in Swift code. [#2]
+- Introduces `@Register` macro and bit field macros (`@Reserved`, `@ReadWrite`,
+  `@ReadOnly`, `@WriteOnly`) for declaring registers composed of bit fields. Bit 
+  field macros take a range parameter which describes the subset of bits they
+  reference (e.g., `@ReadWrite(bits: 3..<7)`). [#4]
+- Enhances bit field macros to support discontiguous bit fields. They now accept
+  a variadic list of bit ranges and automatically handle scattering/gathering
+  from the relevant bits (e.g., `@ReadWrite(bits: 3..<7, 10..<12)`). [#10]
+- Enhances bit field macros with type projections via a new `as:` parameter.
+  Projections allow you to operation on bit fields using strong types instead of
+  raw integers (e.g. `@ReadWrite(bits: 3..<7, as: A.self)`) [#27]
+- Enhances registers with support for interposing reads and writes when
+  compiling with `FEATURE_INTERPOSABLE`. You can use interposers to unit test
+  drivers. This feature is enabled when building with the
+  `SWIFT_MMIO_FEATURE_INTERPOSABLE` environment variable defined. [#31]
+
+The 0.0.1 release includes contributions from [rauhul]. Thank you!
 
 <!-- Link references for releases -->
 
@@ -27,4 +53,12 @@ This changelog's format is based on [Keep a Changelog](https://keepachangelog.co
 
 <!-- Link references for pull requests -->
 
+[#2]: https://github.com/apple/swift-mmio/pull/2
+[#4]: https://github.com/apple/swift-mmio/pull/4
+[#10]: https://github.com/apple/swift-mmio/pull/10
+[#27]: https://github.com/apple/swift-mmio/pull/27
+[#31]: https://github.com/apple/swift-mmio/pull/31
+
 <!-- Link references for contributors -->
+
+[rauhul]: https://github.com/apple/swift-mmio/commits?author=rauhul