Can rects be serialized on 1 line?

[Shadowblitz16]

Summary

I was wondering if rectangles can be serialized to 4 float boxes on 1 line instead of 2 float boxes on 2 lines.

Analysis

I think this would benefit readability quite a bit making things like the pixmap atlas's much easier to edit.

pros
-more compact vertically
-easier to read

cons

• less compact horizontally

• Mockup screenshots and sketches (if applicable)
  basically instead of having it serialized as..
  rect label
  [0][0]
  [0][0]

it would be
rect label
[0][0][0][0]