Simplify SVG logo

[stefanv]

There are some remnants of the design process, overlapping polygons etc.

[stefanv]

I guess we already did this, at least for the one in the scientific-python.org repo. @jarrodmillman is that the definitive version?

I attach a minified version of that logo, down from 8070 bytes to 4663 bytes. It does give up the layers information stored by Inkscape, though, so I think a good compromise is this version exported by Inkscape as "Optimized SVG", removing meta-data but keeping layer names at 5126 bytes:

[stefanv]

I did notice that there is a very thin little space between the edge of the path and the edge of the logo; should we align those to get rid of it?

[stefanv]

Back up to 9000 bytes, but in this version I corrected the minor flaws I found: non-symmetric horizon that did not align with sky nor join smoothly with tree. Trimmed back white ground that was sticking out (still not perfect, I see from rendering on dark background).

[stefanv]

Let's go with the version in #21 (comment)

I reworked the drawing to use circles and other basic primitives, thinking it would improve the situation, but despite being theoretically better, the original still renders best 🤷‍♂️