Exempt our meeting mechanics documents from the CC-BY-SA part and turn them into CC-BY or even CC-0

The meeting mechanism we use in the learning path (shaped by @rrrutledge and many others) has proven to work really well over time and people.
It turns out to be even valuable for other non learning path groups (e.g. our foundation board meetings).

However, the material is still CC-BY-SA licensed and thus would need to return changes back to its origin. Which some people might not be comfortable with for their corporate changes.
While I fully stand behind our choice of CC-BY-SA for the learning path material, I would like to ask to change the license for the above mentioned material to CC-BY (only attribution) or even CC-0 (as public domain as it gets, EU/DE just doesn't know the US public domain concept).

Git says that there is at least on-the-record contribution to it by @rrrutledge, @tsadler1988, @fioddor and of course @arnom-ms (and me, but I'm asking for the change, so count me as "for"). What do you think about this change?

How could we do it:

• Add a note to our README document and add the chosen license as a file to the meeting folder. We could also add Markdown comments indicating the license to those documents.

Kiểm tra các tài liệu trong thư mục cuộc họp và README để xác định tài liệu được đề xuất thay đổi giấy phép bao phủ. Xem lại những người đóng góp đã được ghi nhận và các lựa chọn CC-BY so với CC-0 của issue trước khi quyết định dự án chấp nhận điều gì. Được xem là hoàn tất khi giấy phép đã chọn được ghi trong README hoặc một tệp giấy phép, đồng thời các chú thích giấy phép Markdown được thêm vào khi phù hợp.