Changes in CUPS v2.3b4
----------------------
+- NOTICE: Printer drivers are now deprecated (Issue #5270)
- Kerberized printing to another CUPS server did not work correctly
(Issue #5233)
- Fixed printing to some IPP Everywhere printers (Issue #5238)
keyword, when supported (Issue #5265)
- Fixed an Avahi crash bug in the scheduler (Issue #5268)
- Raw print queues are now deprecated (Issue #5269)
-- Printer drivers are now deprecated (Issue #5270)
- The IPP backend did not properly detect failed PDF prints (rdar://34055474)
- TLS connections now properly timeout (rdar://34938533)
- Temp files could not be created in some sandboxed applications