simple: Implement __validateFor.
objects: Implement a couple more methods.
objects, simple: Implement the rest of the looping stuff.

atoi.ty now runs, although it's a little incorrect still.
nodes: Add some debugging information.
More debugging statements.

I'm gonna get to the bottom of this.
env: Alter slots in the frame that they were allocated in.

Fixes pretty much everything forever. atoi now runs!
Remove debugging statements.

Well, most of them. Some of them are useful!
Allow EjectorObjects to be used as context managers.

And replace the spots that use them. This is largely cosmetic, but it will
ensure that implementors (read: me) don't forget to clean up ejectors when
leaving scopes.

...I should do this for scopes...