This is the simplest example of using subdirectories with go (which is not how the makers of go intended it to be used).
With go modules, we have app/directory/directory, which we didn't have before (I think!)
Nevertheless, it's a step closer to being able to write cleaner code in separate files instead of 1 million line files.
Run with go run .
I'm not sticking with the convention of x.com/y/z that is demanded of me. If I'm not writing a library to be consumed
by others and is only standalone by itself, this is a much simpler way of doing things.
I've yet to stumble upon any problems with writing things this way. Let's see how it goes.