Hide console on Windows with app running SDL2

[bauss]

Running into a couple of problems trying to hide the console that 
opens when running an app that uses sdl2.

First of all I am trying to compile with this using dub:

```
"lflags": ["/SUBSYSTEM:windows"]
```

However that gives me the following error:

```
error LNK2019: unresolved external symbol WinMain
```

And then if I add a WinMain like below:

```
extern (Windows) int WinMain() { return 0; }
```

Then of course it doesn't work, but what is the obvious way to 
solve this?

I basically just want to hide the console, but nothing seems to 
work straight out of the box.