[wp-trac] [WordPress Trac] #33642: Improve default Imagick compression settings

[WordPress Trac]

#33642: Improve default Imagick compression settings
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 Reporter:  joemcgill       |       Owner:  joemcgill
     Type:  task (blessed)  |      Status:  assigned
 Priority:  normal          |   Milestone:  4.5
Component:  Media           |     Version:
 Severity:  normal          |  Resolution:
 Keywords:                  |     Focuses:
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Comment (by joemcgill):

 [attachment:33642.9.patch] returns `WP_Image_Editor_Imagick::test()` to
 it's pre 4.5 state and moves feature tests for new optimizations down to
 where they are used so each optimization can be applied as a progressive
 enhancement without changing requirements for anyone who is currently
 using Imagick.

 This also falls back to the original `scaleImage()` method for resizing
 images if Imagick's `resizeImage()` method isn't available or if an
 appropriate filter constant is not set, since the default `scaleImage()`
 method produces better results in terms of image quality over
 `resizeImage()` when no filter is available.

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Ticket URL: <https://core.trac.wordpress.org/ticket/33642#comment:55>
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