Lavastone now emits light, fixed bug on Slabs

Slabs can't be placed in the top of a block, yet. I'm going to rewrite
it in the future.

src/main/java/info/jbcs/minecraft/chisel/Chisel.java

@@ -37,7 +37,7 @@ import cpw.mods.fml.common.registry.GameRegistry;
 import cpw.mods.fml.common.registry.GameRegistry.Type;
 
 
-@Mod(modid = "chisel", name = "Chisel", version = "1.5.4")
+@Mod(modid = "chisel", name = "Chisel", version = "1.5.4a")
 public class Chisel
 {
     public static ItemChisel chisel;