Fix SVG coordinate parser that caused drawing artifacts #750
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Some SVG files are not correctly drawn because the coordinate parser treats consecutive float coords without zero like one coord. For example: .42 .61 2.50 translates to [0] = '.42.61' [1] = '2.50'. This fixes this cases.
Example of failing SVG: (it's the letter S):
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 144.07 34.75"><path fill="#000" d="M124.72 15.04c-2.74 0-5.29-1.35-5.71-4.21-.12-.83.39-1.4 1.25-1.4 1.98 0 .49 3.38 4.53 3.38 1.47 0 2.96-.68 2.96-2.11 0-1.13-.73-1.64-1.91-1.81-2.72-.37-6.49-.59-6.49-4.36 0-2.99 2.92-4.46 5.36-4.46 1.74 0 3.58.51 4.6 2.06.42.61.88 2.03.07 2.62-.91.69-1.79 0-2.08-.76-.47-1.25-1.32-1.69-2.67-1.69-1.44 0-2.77.74-2.77 2.13 0 1.13 1.08 1.54 2.33 1.69 1.69.24 3.65.27 4.97 1.54.76.71 1.13 1.67 1.13 2.82 0 3.28-2.84 4.56-5.59 4.56" data-name="Capa_1"/></svg>