Plugin doesn’t support the newer datawrapper.de domain for embeds

Embeds used to be primarily served through the https://datawrapper.dwcdn.net/[UNIQUE STRING]/[NUMBER]/ URLs, but now the share URLs provided are primarily in the format https://www.datawrapper.de/_/[UNIQUE STRING/. This plugin currently only supports the former. To support the latter, all that needs to be added is the following, just after the previous wp_oembed_add_provider() call.

wp_oembed_add_provider( 'https://www.datawrapper.de/_/*', 'https://api.datawrapper.de/v3/oembed', false );