Creation of 1.16.3 branch

Initial publishing of the 1.16.3 branch of the mod. A lot of systems are missing (such as Rituals and Living Armour), but enough is present for a decent Alpha release.

src/main/java/wayoftime/bloodmagic/api/SerializerHelper.java

@@ -0,0 +1,60 @@
+package wayoftime.bloodmagic.api;
+
+import javax.annotation.Nonnull;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonSyntaxException;
+
+import net.minecraft.item.ItemStack;
+import net.minecraft.item.crafting.ShapedRecipe;
+import net.minecraft.util.JSONUtils;
+import wayoftime.bloodmagic.util.Constants;
+
+/**
+ * Copied liberally from Mekanism. Thanks, pupnewfster!
+ *
+ */
+public class SerializerHelper
+{
+	private SerializerHelper()
+	{
+	}
+
+	private static final Gson GSON = new GsonBuilder().setPrettyPrinting().disableHtmlEscaping().create();
+
+	private static void validateKey(@Nonnull JsonObject json, @Nonnull String key)
+	{
+		if (!json.has(key))
+		{
+			throw new JsonSyntaxException("Missing '" + key + "', expected to find an object");
+		}
+		if (!json.get(key).isJsonObject())
+		{
+			throw new JsonSyntaxException("Expected '" + key + "' to be an object");
+		}
+	}
+
+	public static ItemStack getItemStack(@Nonnull JsonObject json, @Nonnull String key)
+	{
+		validateKey(json, key);
+		return ShapedRecipe.deserializeItem(JSONUtils.getJsonObject(json, key));
+	}
+
+	public static JsonElement serializeItemStack(@Nonnull ItemStack stack)
+	{
+		JsonObject json = new JsonObject();
+		json.addProperty(Constants.JSON.ITEM, stack.getItem().getRegistryName().toString());
+		if (stack.getCount() > 1)
+		{
+			json.addProperty(Constants.JSON.COUNT, stack.getCount());
+		}
+		if (stack.hasTag())
+		{
+			json.addProperty(Constants.JSON.NBT, stack.getTag().toString());
+		}
+		return json;
+	}
+}