@Scott C Except this Library does not come pre-installed on Windows, Mac or Linux.
As well, "Core" is only the base/main library, so depending on what functionality you've incorporated, you'll quickly get into dependency issues to complicate your now expanded installation routines.
I assumed ensuring Core is installed would be part of this and I primarily use the Web framework so ensuring it is installed on my web server is simple. This could be more complicated for desktop apps but there are options to make this work as well. In C# you can pick the compiler option that includes Core so that they don't need it pre-installed when you distribute your app.