API:Opensearch/de-formal

GET request to search the wiki and obtain results in an OpenSearch format.

Additional notes
Related to this API, a few additional pointers for MediaWiki site administrators and extension developers:
 * - allows search suggestions from this API to be case insensitive.
 * and  configured as true in   would allow each Item in the XML format to include a  tag with a text extract from the article.
 * and  configured as true in   would allow each item in the XML format to include an  tag with a thumbnail image from the article.