Look into where we can improve performance

[andrejewski]

@chasenlehara commented on Fri Jul 14 2017:

In today’s contributors meeting, we talked about how the performance improvements to can-stache with can-reflect weren’t as good as the initial prototypes. This issue is for looking into what we can do to make things faster.

[phillipskevin]

Leaving some info here for when we revisit this, I found that we are calling Observation.add a lot more than we were in 3.8.0:

(3.8.0 on the left, latest master on the right)

The count shown at the bottom is the total # of times Observation.add is called.