Is overwrite supported?

[zach-cloud]

I'm aware this project is old and probably not maintained anymore - but if anyone reads this, do you know how to make MPQ files overwrite? Right now, if you try to add a file that exists, it will just not add. And it seems that there's no delete function.

[zach-cloud]

If anyone else has the same question, I implemented like this:

    public void DeleteFile(string fileName)
    {
        VerifyHandle();

        if (!NativeMethods.SFileRemoveFile(_handle, fileName, 0))
            throw new Win32Exception();
    }

Not going to make a PR