Merge knockout-deferred-updates into master

[mpj]

Because it's awsum and the right thing to do.

[mbest]

Yeah. I think it will be eventually.

[vamp]

subscription slow down when ko.deferred enabled, comparison: http://jsperf.com/ko-computed-vs-subscription http://jsperf.com/ko-computed-vs-subscription-deferred

computed: 3x (cool!) but subscription: 0.5x

[mbest]

subscription slow down when ko.deferred enabled

That's interesting, I'll take a look when I have some time.

[mbest]

I've just made some updates to improve performance. The biggest functional change is that it now also eliminates duplicate updates for manual subscriptions.

[mbest]

Here's your test using the new version: http://jsperf.com/ko-computed-vs-subscription-deferred/2

[vamp]

Cool! Great work!

[juuxstar]

:+1: for merging to knockout officially. It's a must for any projects of a non-trivial scale. Any news on this?

I've forked Knockout for my own customizations but knockout-deferred overwrites some of the code in Knockout (mainly the computed) thus interfering with those changes. I'd rather not have to fork knockout-deferred as well.

[mbest]

I'll need to update this to support Knockout 3.2

[mbest]

@juuxstar. I understand your point about changing both. I'm hoping this will join Knockout whenever we do 4.0.