功能强大的Excel类，支持打开，保存插入，修改等功能，附带有DEMO案例-Powerful Excel classes, support open, save to insert, modify other functions, with a DEMO Case

将stm32的boot和app自动合成一个hex文件，方便首次烧录。（可以在末尾添加数据）-Synthesize the stm32 boot and app automatically a hex file, convenient burn for the first time.(can be added to the end in the data)