tree 1b56aacd54facbc718ab861b5cfcdecce63449d2
parent 9bb73264daa47461079780a0a882eedae9e26a49
author Jonathan Amsterdam <jba@google.com> 1548417082 -0500
committer Jonathan Amsterdam <jba@google.com> 1548430240 +0000

xerrors: add and modify documentation

Also split examples into separate files so their full contents appear
in the godoc.

Change-Id: I1c6432687262a59f9b0890d60d23de2e6022b08e
Reviewed-on: https://go-review.googlesource.com/c/159657
Reviewed-by: Marcel van Lohuizen <mpvl@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>