H1B EOS/Extension/延期 regular->PP timeline

看地上的h1b extension 的内容略少，贡献一个自己的数据点。
05/05. H1B EOS regular filed.
05/14. H1B EOS regular receipt received.
06/07. 追加 PP, filed.
06/23. H1B EOS PP Approved.
07/02. 我拿到了纸质I797A.