Updates from Travis' most recent review#4

Merged

tulir merged 2 commits intotulir:asynchronous_uploadsfrom beeper:asynchronous_uploads

Apr 20, 2023

+8-7

Commits on Apr 20, 2023

Clarify that rate limiting can apply on /create and /upload
sumnerevans
committed
Clarify that unused_expires_at is a POSIX millisecond timestamp
sumnerevans
committed