Limit max droplet count to 50 (fix for 0.9.24 branch only)
This fixes the issue with insane amounts of droplets in 0.9.24.
It's temporary, the real fix is in default branch, but would be desyncing.
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.