版本更新至：3.76

调整：开发框架改为 Gradle
新增：Language2 工具新增 [book] 类型

src/main/java/me/skymc/taboolib/exception/PlayerOfflineException.java

@@ -0,0 +1,10 @@
+package me.skymc.taboolib.exception;
+
+public class PlayerOfflineException extends Error {
+
+	private static final long serialVersionUID = 4129402767538548807L;
+	
+	public PlayerOfflineException(String message) {
+		super(message);
+	}
+}