Rewrite TextureLoader to inspect the replay

[beheh]

Don't load all assets at once, only what's needed.

[jleclanche]

My suggestion is that when you simulate the packet tree, you make a note whenever a certain effect hapens.

I would also, at least at first, not even bother to inspect whether the entity is a hero or minion or what not. You see frozen, you load frozen artworks. Etc.