Review queue

Open pull requests that are marked ready for review and have green CI, oldest first. Ordered by when each one first became reviewable — a PR that drops out and comes back keeps its place.

# Repo Pull request Author Waiting
1 reqwless #146 `mbedtls-rs` buffered writes robertbastian 9d
2 reqwless #142 Allow to configure embedded-tls TLS cipher at compile time alloncm 9d