RSS icon changed to a single path (#79)

* Use arcs to save space on path arcs and be more true to original geometry

* Use single path for equal width rectangles

* Deleted unneeded commas

* reduce path count by using stroke linecap

* use single path instead of 4 rects, use fill rule to forego entering M for every rect

* Using arcs

* Fix typos

* Changed side for OSI icon

* Changed size for windows logo

* Changed size for ghost logo

* Shrunk digidentity to two paths. Some times an arc is cheaper on bytes than a circle element

* Concatenated paths

* RSS icon shrunk to a single path of 4 arcs

* An incomparably more geometrically correct version that is just few bytes longer and GZIP friendly

* Forgot aria label

images/svg/twitter.svg

@@ -1 +1 @@
-<svg viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg" aria-label="Twitter" role="img"><rect fill="#1da1f3" height="512" rx="15%" width="512"/><path d="m465 135c-14 7-31 11-47 13 17-10 30-27 37-46-15 10-34 16-52 20a83 83 0 0 0 -141 75c-68-3-129-35-169-85a80 80 0 0 0 26 109c-13 0-26-4-37-9 0 39 28 72 65 80-12 3-25 4-37 2 10 33 41 57 77 57-42 30-77 38-122 34 170 111 378-32 359-208 16-11 30-25 41-42z" fill="#fff"/></svg>
+<svg viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg" aria-label="Twitter" role="img"><rect fill="#1da1f3" height="512" rx="15%" width="512"/><path fill="#fff" d="M465 135a150 150 0 0 1-47 13 83 83 0 0 0 37-46 150 150 0 0 1-52 20 83 83 0 0 0-141 75 230 230 0 0 1-169-85 80 80 0 0 0 26 109 83 83 0 0 1-37-9 83 83 0 0 0 65 80 83 83 0 0 1-37 2 83 83 0 0 0 77 57 150 150 0 0 1-122 34 230 230 0 0 0 359-208 150 150 0 0 0 41-42"/></svg>