opml: update changelog for v1.0.0

Signed-off-by: VirtualTam <virtualtam@flibidi.net>

CHANGELOG.md

@@ -5,10 +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/) and this
 project adheres to [Semantic Versioning](https://semver.org/).
 
-## [v1.0.0](https://github.com/virtualtam/opml-go/releases/tag/v1.0.0) - UNRELEASED
- Initial release.
+## [v1.0.0](https://github.com/virtualtam/opml-go/releases/tag/v1.0.0) - 2024-11-07
 
- ### Added
+Initial release.
 
- - Unmarshal data using the OPML file format
- - Marshal documents containing text, feed subscription, link and directory elements
+### Added
+
+- Unmarshal data using the OPML file format
+- Marshal documents containing text, feed subscription, link and directory elements
+- Setup Github Actions to run continuous integration workflows
+- Add test coverage for OPML specification examples
+- Add test coverage for Feedly and Newsblur feed subscription exports
+- Add test examples to demonstrate usage

README.md

@@ -5,6 +5,13 @@
 `opml-go` provides a library to marshal and unmarshal outlines using the
 [Outline Processor Markup Language (OPML)](https://opml.org/spec2.opml) 2.0 format.
 
+## Usage
+
+See examples under:
+
+- `example_marshal_test.go` to create an OPML document and marshal it to XML;
+- `example_unmarshal_test.go` to read a file containing an OPML document.
+
 ## Change Log
 
 See [CHANGELOG](./CHANGELOG.md)