Make BuildState animations crisp AF
Make BuildState animations crisp AF

also fixes a rounding error in Safari (wherein the small versions would spin off-centre), but the first bit sounds cooler

instead of spinning the entire SVG, we now spin just the mask, which means it’s rendered within the SVG, which means it’s all antialiased properly for the orientation it’s in

buildkite/frontend,fotinakis/buildkite-frontend,fotinakis/buildkite-frontend,buildkite/frontend