Reverse order of visual gears linked list
Now vgears will render in the order they have been added.
Older visual gears are rendered earlier, so they are "behind" newer visual gears.
This has been primarily done to fix the render order of speech bubbles (
bug #287).
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.