Add a changelog entry for `Null`.

Add a changelog entry for `Null`.

Fixes #28024
BUG= http://dartbug.com/28024
R=lrn@google.com

Committed: https://github.com/dart-lang/sdk/commit/b002a1781168b7f0c64264c9f5b569f2b48aa7d2

[floitsch, 2017-01-19 12:37:02]

floitsch@google.com changed reviewers:
+ lrn@google.com

[Lasse Reichstein Nielsen, 2017-01-19 13:58:47]

lgtm

https://codereview.chromium.org/2640163005/diff/1/CHANGELOG.md
File CHANGELOG.md (right):

https://codereview.chromium.org/2640163005/diff/1/CHANGELOG.md#newcode33
CHANGELOG.md:33: it is considered a subtype of every other type.
(Not technically true, since bottom exists, but let's not confuse the reader: )

https://codereview.chromium.org/2640163005/diff/1/CHANGELOG.md#newcode41
CHANGELOG.md:41: List<Null> bar() => [];
Add the type parameter to the literal as well, just for good measure.

[floitsch, 2017-01-19 14:18:29]

Description was changed from

==========
Add a changelog entry for `Null`.

Fixes #28024
BUG= http://dartbug.com/28024
==========

to

==========
Add a changelog entry for `Null`.

Fixes #28024
BUG= http://dartbug.com/28024
R=lrn@google.com

Committed:
https://github.com/dart-lang/sdk/commit/b002a1781168b7f0c64264c9f5b569f2b48aa7d2
==========

[floitsch, 2017-01-19 14:18:30]

Committed patchset #2 (id:20001) manually as
b002a1781168b7f0c64264c9f5b569f2b48aa7d2 (presubmit successful).

[floitsch, 2017-01-19 14:18:54]

https://codereview.chromium.org/2640163005/diff/1/CHANGELOG.md
File CHANGELOG.md (right):

https://codereview.chromium.org/2640163005/diff/1/CHANGELOG.md#newcode33
CHANGELOG.md:33: it is considered a subtype of every other type.
On 2017/01/19 13:58:47, Lasse Reichstein Nielsen wrote:
> (Not technically true, since bottom exists, but let's not confuse the reader:
)

Acknowledged.

https://codereview.chromium.org/2640163005/diff/1/CHANGELOG.md#newcode41
CHANGELOG.md:41: List<Null> bar() => [];
On 2017/01/19 13:58:47, Lasse Reichstein Nielsen wrote:
> Add the type parameter to the literal as well, just for good measure.

Done.