HedgeEditor: Clean up messy HWP overwrites
- Remove all sounds
- Move sticky mine, mine and dud mine images to custom sprites
- Move crate preview outline to custom sprite
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.