unicode: Update to version 9.0.0

[nightlyone]

Please answer these questions before submitting your issue. Thanks!

1. What version of Go are you using (go version)?

go version go1.6.2 linux/amd64

1. What operating system and processor architecture are you using (go env)?

GOARCH="amd64"
GOOS="linux"
(rest redacted)

1. What did you do?

$ go doc unicode.Version

1. What did you expect to see?

const Version = "9.0.0"
Version is the Unicode edition from which the tables are derived.

1. What did you see instead?

const Version = "8.0.0"
Version is the Unicode edition from which the tables are derived.

[nightlyone]

I didn't see it tracked somewhere so I opened an issue. Please close, if I did overlook an already existing issue.

Useful links:

• Blogpost: http://blog.unicode.org/2016/06/announcing-unicode-standard-version-90.html
• Changes and migration guidance: http://unicode.org/versions/Unicode9.0.0/

[gopherbot]

CL https://golang.org/cl/24496 mentions this issue.

[Thomasdezeeuw]

Is it correct that the issue and the commit state version 9, while api/except.txt states version 8.0.0? (see

go/api/except.txt

Line 332 in a2a4db7

pkg unicode, const Version = "8.0.0"

).

[mpvl]

@Thomasdezeeuw: yes. api/except.txt tells the API checker that it is okay to no longer have the Version constant be 8.0.0. api/go1.7.txt says it is now 9.0.0.

(See https://github.com/golang/go/blob/a2a4db7375204c22898559d3b96a748c6df96294/api/go1.7.txt)

[Thomasdezeeuw]

Ok, just checking.