[wp-trac] [WordPress Trac] #34350: Update Backbone to 1.2.3 and Underscore to 1.8.3

[WordPress Trac]

#34350: Update Backbone to 1.2.3 and Underscore to 1.8.3
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 Reporter:  caseypatrickdriscoll            |       Owner:  adamsilverstein
     Type:  enhancement                     |      Status:  reopened
 Priority:  normal                          |   Milestone:  4.5
Component:  External Libraries              |     Version:  4.4
 Severity:  normal                          |  Resolution:
 Keywords:  needs-testing has-patch commit  |     Focuses:  javascript
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Comment (by ocean90):

 In [changeset:"36575"]:
 {{{
 #!CommitTicketReference repository="" revision="36575"
 Media Library: After [36546] restore the "Add new" functionality.

 Rework handling of the `'toggle:upload:attachment'` event using `.on` vs
 `.listenTo` for better compatibility with the current version of Backbone.

 Props adamsilverstein.
 See #34350.
 Fixes #35853.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/34350#comment:54>
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