core: bump version to 3.0 alpha (#5082)

lighthouse-core/test/report/html/renderer/report-renderer-test.js

@@ -161,7 +161,7 @@ describe('ReportRenderer', () => {
     it('renders a footer', () => {
       const footer = renderer._renderReportFooter(sampleResults);
       const footerContent = footer.querySelector('.lh-footer').textContent;
-      assert.ok(footerContent.includes('Generated by Lighthouse 2'), 'includes lh version');
+      assert.ok(/Generated by Lighthouse \d/.test(footerContent), 'includes lh version');
       assert.ok(footerContent.match(TIMESTAMP_REGEX), 'includes timestamp');
     });
   });

lighthouse-core/test/results/sample_v2.json

@@ -1,6 +1,6 @@
 {
   "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3358.0 Safari/537.36",
-  "lighthouseVersion": "2.9.1",
+  "lighthouseVersion": "3.0.0-alpha",
   "fetchedAt": "2018-03-13T00:55:45.840Z",
   "generatedTime": "Please use .fetchedAt instead",
   "initialUrl": "http://localhost/dobetterweb/dbw_tester.html",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "lighthouse",
-  "version": "2.9.1",
+  "version": "3.0.0-alpha",
   "description": "Lighthouse",
   "main": "./lighthouse-core/index.js",
   "bin": {