v2.5.9

• Add support for onion service (http://doggyhegixd2dvx5bqkxlyqf2pjpu5y72nwiokkn7oegdjpva5ypvyqd.onion/)
• Fix "nickname in use" error checking for new ejabberd version
• Update Chrome extension manifest to V3
• Improve reconnect handling
• Replace help text with more useful information
• Update libraries