Updated Continental supplies
Noticable changes:
* Selection of continent is now before a turn
* Australia and Antarctica will have new moddable weapons
* All continents have different starting healths per hog
Directory for automated tests to test the engine.
Run `ctest` in the root directory of this repository to run all tests.
Run `ctest -R <test name>` to run only the test with the given name.
This requires you to have CMake.