Bar graph added.

node_modules/d3-time/src/utcMinute.js

@@ -0,0 +1,15 @@
+import interval from "./interval.js";
+import {durationMinute} from "./duration.js";
+
+var utcMinute = interval(function(date) {
+  date.setUTCSeconds(0, 0);
+}, function(date, step) {
+  date.setTime(+date + step * durationMinute);
+}, function(start, end) {
+  return (end - start) / durationMinute;
+}, function(date) {
+  return date.getUTCMinutes();
+});
+
+export default utcMinute;
+export var utcMinutes = utcMinute.range;