Context Navigation

Changes between Initial Version and Version 1 of Ticket #21170, comment 68

initial	v1
4	4	Just to clarify, I'm not dismissing it rather just saying that it becomes cumbersome. It's a bigger decision to extend Backbone because we then need to include Backbone & underscore everywhere in core (frontend & backend) to make this events implementation available. If that's the route people are leaning to, that's fine with me.
5	5
6		You can easily extend `Backbone.Events` when it's enqueued, to provide ~~Backbone.Events~~ the additional functionality this library would offer. Curious to hear thoughts from nacin and azaozz about this.
	6	You can easily extend `Backbone.Events` when it's enqueued, to provide `Backbone.Events` the additional functionality this library would offer. Curious to hear thoughts from nacin and azaozz about this.