info diagram to show version of mermaid, bugfixes for gantt chart

e2e/spec/info.spec.js

@@ -0,0 +1,15 @@
+/* eslint-env jest */
+import { imgSnapshotTest } from '../helpers/util.js'
+const { toMatchImageSnapshot } = require('jest-image-snapshot')
+
+expect.extend({ toMatchImageSnapshot })
+
+describe('Sequencediagram', () => {
+  it('should render a simple info diagrams', async () => {
+    await imgSnapshotTest(page, `
+    info
+       showInfo
+      `,
+    {})
+  })
+})