testing: improve documentation, examples, release notes for
testing.b.Loop.
This CL added documentation of the no-inlining semantic of b.Loop, with
a concrete example. This CL also tries to improve the release note to be
more descriptive.
Fixes #61515
Change-Id: I1e13cc92d5d6bdbf40fb44f44475e249747b807f
Reviewed-on: https://go-review.googlesource.com/c/go/+/633536 Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Commit-Queue: Junyang Shao <shaojunyang@google.com> Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: David Chase <drchase@google.com>