Sync ReadLimiter#201

Merged

dwrensha merged 4 commits intocapnproto:masterfrom

appaquet:atomic-read-limiter

Dec 19, 2020

Commits on Sep 11, 2020

Atomic read limiter
appaquet
committed

Commits on Sep 22, 2020

Use AtomicUsize for read limiter + feature gate it
appaquet
committed

Commits on Nov 27, 2020

Atomic read limiter: better logic
appaquet
committed

Commits on Nov 28, 2020

Atomic read limiter: better logic
appaquet
committed