Include multi files

```historica  
  
style=1   
   
include_files=["file1.md", "sub_dir/file2.md", "sub_dir2/sub_dir3/file3.md]   
```

_{Style maybe 1 or 2}

_{Directories in include_files are relative paths to vault directory}

Tip

You can use “all” (without an array notation) to include all files in vault, this option is not encouraged because, it
is a heavy task, and Historica not good at detecting non-English string