Add console commands
[haccable] Allow an array hacc to represent a polymorphic object.
[haccable] fix array-type polymorphic notation...kinda...there's another memory leak though.
[core] command_from_terminal now uses array-like syntax with square brackets implied, so it looks like a command line.
Allow declaring "empty" HCBs.
[core] add quit_immediately command
[core] add seq command
[core, vis] Finish resources and add an images resource
Start image drawing code.
[vis] Implement loading of images.  I think.
Change loop testing code a little
I should just never use smart pointers.
Merge branch 'forrealz' of github.com:quietfanatic/rata into forrealz

Dunno what happened here.

Conflicts:
	modules/util/inc/resources.h
	modules/vis/inc/vis.h