I am proud to announce the release of version 1.1 of the Bugzilla REST API. This release has performance improvements to reduce the load on Bugzilla, and other things helpful to Bugzilla admins.
I notice a lot of clients are still using BzAPI 0.9; this will go away in 2 weeks, on 19th March. There is a limit to the number of old versions we can support on the server, particularly as the older ones put a larger load on Bugzilla. Please use either the /1.1 or the /latest endpoints.