Bump API version to v1.6
Bump API version to v1.6

1.6 provides new features for downloading and managing CI reports

gabycampagna/frontend,stopfstedt/frontend,thecoolestguy/frontend,dartajax/frontend,gboushey/frontend,dartajax/frontend,jrjohnson/frontend,thecoolestguy/frontend,ilios/frontend,gboushey/frontend,jrjohnson/frontend,stopfstedt/frontend,djvoa12/frontend,djvoa12/frontend,gabycampagna/frontend,ilios/frontend