Reduce generated SVG file size

[ghost]

Since this project takes alpha from a global config, all shapes share the same opacity.

Giving alpha to the parent element, reduces size of generated SVG by 31% for n=100

[css117]

Alpha on single shapes won't output same as group alpha

[davethegr8]

Instead, use a style tag as a child of the svg and it'd be a fine replacement. Example:

<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="640" height="480" viewbox="0 0 4096 3072">
        <style>polygon { fill-opacity: 0.5; }</style>
...