Experimental support for gantt diagrams

src/diagrams/gantt/d3.js

@@ -0,0 +1,15 @@
+/* global window */
+
+var d3;
+
+if (require) {
+  try {
+    d3 = require("d3");
+  } catch (e) {}
+}
+
+if (!d3) {
+  d3 = window.d3;
+}
+
+module.exports = d3;