Add polyline unittest

release-notes.html

@@ -17,6 +17,8 @@
 	<ul>
 		<li>Only convert to #RRGGBB format if the color name will actually be shorter</li>
 		<li>Remove duplicate gradients</li>
+		<li>Remove empty q,a path segments</li>
+		<li>Scour polyline coordinates just like path/polygon</li>
 	</ul>
 </section>
 

unittests/polyline-coord.svg

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg xmlns="http://www.w3.org/2000/svg">
+	<polyline fill="blue" points="10000,-50" />
+</svg>