First draft of new API.
Added delete api.
Parameter names more meaningful.
Changed parameter names again.
Operation deleteRelation doesn't make sense.
Renamed parameter relationType to relation.
Moved Expcetion hierarchy into Api repo.
Updated version.
Replaced InvalidNodeTypeException by IllegalArgumentException.
Now storing request actions.
Implemented Responses. Now storing longs instead of muids.
Now using longs as storage in read requests.
Now also using Longs for ToIds.
Merge branch 'feature/newApi' into develop
Fixed a bug not allowing multiple details for same muid on read response.