Add player animation system!

- Hooks into ModelRenderer by wrapping it in an extended version that allows modification of angles after the model has set them
- Is compatible with pretty much everything, yay (even modded armour!)
- Adds property overrides to ItemWand so that gets animated too
- Adds a system for generating override models from a template at runtime so I don't have to duplicate all the wand models
- Tweaks particles and ray spells so they line up with the end of the newly-animated wand
- Fixes a long-standing bug where wand usage actions would stop immediately for all non-continuous spells

src/main/java/electroblob/wizardry/spell/Flight.java

@@ -1,11 +1,11 @@
 package electroblob.wizardry.spell;
 
 import electroblob.wizardry.Wizardry;
+import electroblob.wizardry.item.SpellActions;
 import electroblob.wizardry.util.ParticleBuilder;
 import electroblob.wizardry.util.ParticleBuilder.Type;
 import electroblob.wizardry.util.SpellModifiers;
 import net.minecraft.entity.player.EntityPlayer;
-import net.minecraft.item.EnumAction;
 import net.minecraft.util.EnumHand;
 import net.minecraft.world.World;
 
@@ -17,7 +17,7 @@ public class Flight extends Spell {
 	private static final double Y_NUDGE_ACCELERATION = 0.075;
 
 	public Flight(){
-		super("flight", EnumAction.NONE, true);
+		super("flight", SpellActions.POINT, true);
 		addProperties(SPEED, ACCELERATION);
 	}