Added the definition of the new webs service with appropriate name and capabilities.
Updated services definition.
Updated version, release and maturity.
In-progress updated readme, with extra capability for the gradebook, but no details relating to the new web service.
New web service 'get_targets_by_username'.
Updated History section.
In-progress commit.
Emergency commit as I don't want to lose the results of hours of hacking through Moodle core libs.
Final pre-epic-testing version of this webservice.
Emergency commit.
Emergency 'holy crap, everything's working' commit.
Final commit.
Sending nulls instead of failing grades for a score of 0.
Added more A Level courses and minor changes.