Nearby-info structure different than in original paper

[ozett]

the document in the github here shows a different structure than in the original paper.
how come? what is the source of the github document here? some updates?

also the numbering 1-31 seems to be BITS, but the BT-Advertisment can not be longer than 31 BYTES?

https://petsymposium.org/2020/files/papers/issue1/popets-2020-0003.pdf

vs

https://github.com/furiousMAC/continuity/blob/master/messages/nearby_info.md

the 2019 Paper shows the byte for action code as nibbles , and here is one half location sharing, not status

https://petsymposium.org/2019/files/papers/issue4/popets-2019-0057.pdf