Customizable I/O methods

[seanohue]

Right now the I/O for lobus is very specific and only customizable by changing the socket or say methods. This means that customizing I/O in any significant way requires a lot of complexity.

There should be a way to provide more custom methods for user input and output.

Before doing this, the methods handling I/O currently will likely need a small refactor.

If no custom method is provided it should fall back to the current methods.