[95] Shooting Arrows

As part of kmixer, I needed a feature of coreVector that coreVector currently doesn't have. In the process of adding it though, I came across a lot more heap corruption cases. So I'm currently in the process of a lot of boring refactoring.

The feature I wanted to add was the inclusion of individual lengths of axes, separate from the memory's actual allocated size. Other than that though, there's not much that's new here, other than reworking just about everything that was there previously.

Also, I am adding the ability to append some data to the last element of a vector, as is also apparent in the source here.

I also changed basically everything about the header in some way too.