About: https://github.com/twhl-community/halflife-updated/blob/master/README.md
Changelog: https://github.com/twhl-community/halflife-updated/blob/master/CHANGELOG.md
See this page for instructions on installing the mod: https://github.com/twhl-community/halflife-updated/blob/master/INSTALL.md