Convert coordinate objects into arrays

[ElDeveloper]

The idea is to change this:

{'name': 'a', 'x2': 1, 'xc0': 2, 'xc1': 3, 'xr': 4, 'y2': 5, 'yc0': 6, 'yc1': 7, 'yr': 8}

To this:

['a', 1, 2, 3, 4, 5, 6, 7, 8]

This should save python from writing all the repeated key data, and save JavaScript from parsing all of that. We would just need to load the data in a container once it's parsed in JavaScript. Originally brought up in #231.

[fedarko]

Closed by #301!