Add hover to clarify stroke boundaries

client/index.html

@@ -57,7 +57,8 @@
           <path fill="{{base_color}}" stroke="{{base_color}}" d="{{d}}"></path>
           {{#if show_strokes}}
             {{#each strokes}}
-              <path fill="{{color}}" stroke="black" d="{{stroke}}"></path>
+              <path class="stroke" fill="{{color}}"
+                    stroke="black" d="{{stroke}}"></path>
             {{/each}}
           {{else}}
             {{#each bridges}}

client/style.css

@@ -54,6 +54,12 @@
   margin: 0 auto;
 }
 
+#glyph svg g path.stroke:hover {
+  cursor: pointer;
+  stroke: red;
+  stroke-width: 8;
+}
+
 #glyph svg g circle:hover, #glyph svg g line:hover {
   cursor: pointer;
   fill: blue;