Kill most unnecessary implicit array building.

CoffeeScript has a great feature, that sometimes sucks. We should be more careful about this in the future.

There are a couple tests that end up looking like this:

![](http://puu.sh/32rqS.png)
![](http://puu.sh/32ru6.png)

The sample size for these is really small though. The more important test:

![](http://puu.sh/32s1W.png)

@kristianpd @nickjs @hornairs @SoapyIllusions