I am proud to announce the release of version 1.3 of the Bugzilla REST API. This maintenance release has a bug fix or two, and fully supports the version of Bugzilla 4.2 which has just been deployed on bugzilla.mozilla.org. For smooth interaction with BMO, you should be using this version.
The installation of BzAPI 1.1 on api-dev.bugzilla.mozilla.org will go away in 4 weeks, on 4th April. There is a limit to the number of old versions we can support on the server, particularly as the older ones can put a larger load on Bugzilla and may not work correctly. Please use either the /1.3 or the /latest endpoints. Now that BzAPI has been stable for some time, tools which earlier rejected using the /latest endpoint may want to reconsider.