This is a very nice Framework. I set it up, I am modifying it to incorporate windowing and input handling, but overall this is a really nice project you have here. I really hope you have tutorials come out, or that it gets more attention, like it deserves.
Thanks for the input!
You can check out the other engine project I'm working on, called Delectable, for windowing and input handling.
The engine was designed to run on top of the framework and focuses on the higher level stuff that Chewable doesn't incorporate.
It also has XML serialization utilities and I might look at integrating a graphics engine like Ogre or Horde3D in the future.
Delectable is not as polished as Chewable and could use a bit of refactoring.
I don't have much time to do it all at once right now because I'm developing a game with a bunch of other peple (more details and links to it over the next couple of months!).
The game utilizes both the framework & engine and a lot of the improvements made to the projects have been based off of feedback from the development process.
Feel free to message me or reply on this thread if you have any questions.