Added Dogfart scraper. Added 'date added' property to release page.

src/argv.js

@@ -30,6 +30,11 @@ const { argv } = yargs
         type: 'string',
         default: config.fetchAfter.join(' '),
     })
+    .option('pages', {
+        describe: 'Limit pages to scrape per site. Only used when no dates are found or --after is unset.',
+        type: 'number',
+        default: 1,
+    })
     .option('save', {
         describe: 'Save fetched releases to database',
         type: 'boolean',