Version 4.6.0

Add support for making service requests for single pages with access to relative links included in the response
Fix issue when platforms enforce a page limit when none has been requested
Improve support for Course Groups service (order of parameters to Service\Groups->get method changed)
Add support for obsolete link-level membership service endpoint
Improved error logging for OAuth-signed messages
Constructor for DataConnector class has been changed to protected - always use its static getDataConnector method instead