New version 4.0 was introduced. 4.0 introduces several changes to API parameters and responses that are not compatible with their counterparts of earlier versions
The response was adapted to by default only return basic data for found elements. Additional data (e.g. attributes, relations, other data) has to be explicitly specified.
To specify additional data to be contained in the response (rwf information, links, stableLink, etc.), the URL parameter include has to be used.
Paging is now enforced and page sizes can not be larger than 1000 elements.
The new include parameters allAttributes and allRelations (e.g. ?include=allAttributes&include=allRelations) can now be used to explicitly return all attributes and/or all relations for elements in the search result. This should be used with care as this can result in very large results.