[wp-trac] [WordPress Trac] #47478: Update Backbone.js to 1.4.0

[WordPress Trac]

#47478: Update Backbone.js to 1.4.0
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 Reporter:  desrosj                              |       Owner:
                                                 |  adamsilverstein
     Type:  task (blessed)                       |      Status:  closed
 Priority:  normal                               |   Milestone:  5.3
Component:  External Libraries                   |     Version:
 Severity:  normal                               |  Resolution:  fixed
 Keywords:  early good-first-bug has-patch       |     Focuses:
  needs-dev-note commit                          |
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Comment (by joyously):

 Was the Customizer tested with the new version?

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Ticket URL: <https://core.trac.wordpress.org/ticket/47478#comment:17>
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