Added 3 unicode pages for font, fixed UI, added Block.breakable

Added 1, 2, 3 and 4 unicode pages from Minecraft.
Font now uses std::wstring instead of std::string
Added Block.breakable field (the only unbreakable block is bedrock)
Bedrock is now selectable

src/lighting/Lighting.cpp

@@ -6,6 +6,8 @@
 #include "../voxels/voxel.h"
 #include "../voxels/Block.h"
 
+#include <iostream>
+
 Lighting::Lighting(Chunks* chunks){
 	this->chunks = chunks;
 	solverR = new LightSolver(chunks, 0);