* Sideports a couple of init unit tests from Neb.
* Trying to unfuck initialize logic.
* Removing del()s.
* Adjusting return values to Initialize().
* Moving some dangerous object logic from obj onto the two types that use it.
* Rolling back some init changes and commenting out initialized atom unit test.
* this comment formatting is a minor war crime
* Removed sleep() from signaler circuit Initialize().
* Additional Init fixes post-rebase.
* Uncomments subsystem test since that's passing.
Ports most of /tg/'s sprites for stacks displaying their contents. I added some of my own as well to fill in materials that we have but they didn't.
Moves all stack icons to their own dmi.
Reworks fifty_spawners to use paths instead of strings, as it prevents bugs in the long term.
