Terrible Creep: made some sort of hierarchic data unified model thing that can be used in generating a text file using a template in a custom text format

Also, this code is about as ordered as Amazon jungle compared to Versailles gardens. I'm pushing it mostly in case of wild disk format and as an example of modern art. I've yet to find out what the message is, but it's probably something along the lines of "documenting is not fun" and "programmers have their worse days, too". I guess it might be useful as some sort of reference later, though. Plus, it seems to work... to an extent.

Tasks for later: decide what I actually want that unified model to look like, possibly getting rid of nodes and builders separation in the core, but earlier making a reference document for the model itself, aside from my C# implementation. Document the code. Describe the different formats that can be converted to/from that model's trees, and how they correspond to each other. That's quite a work, but hey, at least now I have some sort of text generator!

(I wouldn't mind some help, actually...)