Request to publish release versions #37

Hi, I just stumbled upon this repo as I was looking for a user agent parser in c++.

I was looking to adding it to my project but realized there's no release versions.

I think it would be helpful to publish new versions as it would allow me to:

1. Fetch a static version of the code via CMake https://cmake.org/cmake/help/latest/module/FetchContent.html
2. Safely include this library in my project knowing that i've tested it on a set version
3. Keep track of new features/change logs in the release notes

And also help attribute reported issues to specific versions.

Thanks for building this!