add read previous events

src/scrape.js

@@ -4,7 +4,11 @@ const path = require('path');
 const fs = require('fs').promises;
 
 const { graphql_endpoint } = require('./constants');
-const { parse_args, create_images_directory } = require('./logic');
+const {
+  create_images_directory,
+  parse_args,
+  read_previous_events,
+} = require('./logic');
 
 const { page_ids, output, events: event_file } = parse_args(
   process.argv.slice(2),