Sync Part 2 release

自从开始学习编程，就有一个问题，我从Github上Fork的文件，万一作者更新了怎么办呢？

我做了几个设想，当了一次设计者。可是每一种设想都不行，想找一个方法吧，不知道怎么做，笨鸟先飞，从头学吧，好在第二节课老师给了解决方案，链接是英文。
Syncing your fork to the original repository via the browser

读了一遍没读懂，第二遍懂了。可是不明白原理，胆战心惊地跟下来，竟然成功了。
原来是反过来，先做个比较，如果作者增删了新的章节，作者给你提pull request 。

Note that this pull request is to you! So you can confirm that it's ok and merge it when necessary.

真是绝妙的思路。困惑了5个月的问题解决了。

PS C:\Users\Administrator.DESKTOP-750NNGE\Code\pilot-student> git pull
Already up to date.
PS C:\Users\Administrator.DESKTOP-750NNGE\Code\pilot-student> jupyter lab
[I 19:26:21.402 LabApp] JupyterLab extension loaded from c:\users\administrator.desktop-750nnge\scoop\apps\python37\current\lib\site-packages\jupyterlab
[I 19:26:21.402 LabApp] JupyterLab application directory is c:\users\administrator.desktop-750nnge\scoop\apps\python37\current\share\jupyter\lab
[I 19:26:22.090 LabApp] Serving notebooks from local directory: C:\Users\Administrator.DESKTOP-750NNGE\Code\pilot-student
[I 19:26:22.090 LabApp] The Jupyter Notebook is running at:
[I 19:26:22.090 LabApp] http://localhost:8888/?token=0da14bbbcce3eaeee88fca8c32b905f3a77206c7b9663b28
[I 19:26:22.090 LabApp]  or http://127.0.0.1:8888/?token=0da14bbbcce3eaeee88fca8c32b905f3a77206c7b9663b28
[I 19:26:22.090 LabApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 19:26:22.215 LabApp]

    To access the notebook, open this file in a browser:
        file:///C:/Users/Administrator.DESKTOP-750NNGE/AppData/Roaming/jupyter/runtime/nbserver-2756-open.html
    Or copy and paste one of these URLs:
        http://localhost:8888/?token=0da14bbbcce3eaeee88fca8c32b905f3a77206c7b9663b28
     or http://127.0.0.1:8888/?token=0da14bbbcce3eaeee88fca8c32b905f3a77206c7b9663b28
[I 19:26:29.068 LabApp] Build is up to date
[W 19:26:30.418 LabApp] Notebook p1-1-understanding-programming-languages.ipynb is not trusted
[I 19:26:31.853 LabApp] Kernel started: f76e66c8-610a-48bb-a664-faaefa24bcb9
[I 19:26:31.924 LabApp] Kernel started: 3c223271-508d-4441-b5db-461923caff04

再把本地的文档更新一下，打开jupyter lab，在浏览器Chrome里就可以看到最新文档了，最近下载了Google浏览器Chrome。

注意到，我的仓库里没有issue，后来发现merge之后就自动关闭了，可以在Closed里找。