Release 1.10 – use clearer substitution variable names

This release changes the names of variable used in substitutions to try to make them more self-describing. For example, %PROJECT_NAME% is now %REPO_NAME% (because that's what it is) and %PROJECT_URLNAME% is now %MODULE_NAME% (because that's how it was used).

In addition, this release includes a tiny bit of code cleanup in the GitHub workflow files.