[PATCH 1 of 4] worker: explain why pickle reading stream has to be unbuffered

[Yuya Nishihara]

On Sun, 22 May 2022 02:37:11 +0200, Manuel Jacob wrote:
> # HG changeset patch
> # User Manuel Jacob <me at manueljacob.de>
> # Date 1653164539 -7200
> #      Sat May 21 22:22:19 2022 +0200
> # Node ID 5dfd26ed9c4eeb51bbf910ca7450bdb65f06af81
> # Parent  a17ffde1e71b1c9de5899ae8d5078e67c54ef1d3
> # EXP-Topic worker-improvements
> worker: explain why pickle reading stream has to be unbuffered

Queued the series, thanks. I didn't know that memoryview can be
a context manager.