Add Blog-Entry for update 2.4.0

blog/v2_4_0-update.md

@@ -0,0 +1,34 @@
+---
+title: Updated to v2.4.0 🎉
+description: The update is done
+slug: v2_4_0-update
+authors: konstantin
+tags: [noten-app, version, update, migration, account, development]
+hide_table_of_contents: false
+---
+
+We have released v2.4.0! 🥳
+
+This version includes a new year-system which allows you to have multiple years in one account containing all grades, subjects and homework tasks in that year.
+
+<!-- truncate -->
+
+## Migration
+
+The migration is already done on our servers and we will move all users to the new system till the 31st of December.
+
+:::info Migration Issues
+Because the migration had some issues some accounts have not already automatically switched to the right year.
+
+To fix this, please open the settings, click on "School-Years" and then click on "preUpdate".
+
+If you want to rename the year just click on "School-Years" > "Manage School-Years" > Choose the year you want to rename > Change the name > Click on "Update Year".
+:::
+
+### E-Mails
+
+Because new accounts are required to verify their E-Mail-Address we also require all existing accounts to verify their E-Mail-Address.
+
+When logging in you will be asked to verify your E-Mail-Address.
+
+You can still use your account without verifying your E-Mail-Address **until around the end of January**, but after that you will not be able to use your account anymore until you verify your E-Mail-Address.