Functional release with 80% of intended features

This is a functional release with 80% of the intended features. It has incomplete exception coverage, no winner reporting, and no abilities.

There are 126 tests, counting duplicates, in the test suite.

Note: Note that no release has cpp files, so the project will not compile without modification to the CMakeLists.txt file. This is an educational assignment which asks the student to implement the functionality in a set of requirements (not published here) and write the missing cpp files, using the test suite for guidance and feedback.