Incompatibility for Windows machine.

Hey, just wanted to point out. After trying to run a simulation, I fear that this engine is only for Unix machines. I am running on a Windows machine that does not support the in-built library `fcntl` that is only for Unix machines. There might be some other that I do not know.

To specify the error:
```
ModuleNotFoundError: No module named 'fcntl'
```