xz-5.6.3: Changelog.md

## 5.6.3

* Fork cbits off and rename package
* Also allow to link to system lzma

## 5.2.5.5

* Support GHC 9.4

## 5.2.5.4

* Add Freebsd Aarch64 support

## 5.2.5.3

* Add darwin aarch64 support

## 5.2.5.2

* Add arm/aarch support

## 5.2.5.1

* Add FreeBSD support

## 5.2.5

* Fork the project

## 0.0.0.3

* Fix potential reentrancy issue also discovered in `zlib` ([#4](https://github.com/hvr/lzma/issues/4))