[wp-trac] [WordPress Trac] #31337: Update grunt-autoprefixer to 2.2.0

[WordPress Trac]

#31337: Update grunt-autoprefixer to 2.2.0
------------------------------+-----------------------
 Reporter:  ocean90           |      Owner:
     Type:  enhancement       |     Status:  new
 Priority:  normal            |  Milestone:  4.2
Component:  Build/Test Tools  |    Version:
 Severity:  normal            |   Keywords:  has-patch
  Focuses:                    |
------------------------------+-----------------------
 Upstream changes:

 * grunt-autoprefixer: https://github.com/nDmitry/grunt-
 autoprefixer/compare/v1.0.1...v2.2.0
 * autoprefixer-core: https://github.com/postcss/autoprefixer-
 core/compare/2.0.2...5.1.5

 grunt-autoprefixer has a new [https://github.com/nDmitry/grunt-
 autoprefixer#optionsremove option `remove`] which allows to remove
 outdated prefixes. This is by default true.

 In [attachment:build.diff] you will see that this option removes our media
 queries for Opera: `-o-min-device-pixel-ratio:`. These are only
 [http://caniuse.com/#feat=css-media-resolution supported] by Opera 10 and
 11 and since we support only Opera 12 and up, these lines can be removed.
 `-ms-animation` and `@-ms-keyframes` was never supported in a stable
 branch of IE.

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Ticket URL: <https://core.trac.wordpress.org/ticket/31337>
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