Removed the particle system code from the engine.
The particles doesn't work well with the maps, so I think it should be reimplemented in Lua, if at all.
Updated my devnotes regarding my thoughts on removing the push/pop state functionality.
Added an import() function to the Lua API.
The base lua library now contains serialize() and deserialize() functions.
I've disabled the push_state() and pop_state() functions in states.c and their related functions in resources.c because of the new direction I'm heading in.