Question about "forked" code

[bigplaice]

Hi, team,

This project is a great idea! And I have a question during browsing the code. I can see there are many source code files are 'forked' from upstream PG project. Obviously this would bring much work once change happens to upstream code. Why not use submodule or subtree?

Thanks,
Steven

[gaoxueyu]

hello，I have the exact same question. Do we have a maintenance plan for handling different PG versions? Are we going to use a separate directory per PG version, or only maintain the latest one?
Thanks,
Hope