OpenPrinting CUPS 2.3.3op1

CUPS 2.3.3op1 is the first OpenPrinting CUPS release which fixes many bugs,
incorporates common Linux distribution changes, and provides several IPP
Everywhere improvements. Changes include:

• The automated test suite can now be activated using make test for
  consistency with other projects and CI environments - the old make check
  continues to work as well, and the previous test server behavior can be
  accessed by running make testserver.
• ippeveprinter now supports multiple icons and strings files.
• ippeveprinter now uses the system's FQDN with Avahi.
• ippeveprinter now supports Get-Printer-Attributes on "/".
• ippeveprinter now uses a deterministic "printer-uuid" value.
• ippeveprinter now uses system sounds on macOS for Identify-Printer.
• Updated ippfind to look for files in "~/Desktop" on Windows.
• Updated ippfind to honor SKIP-XXX directives with PAUSE.
• Updated IPP Everywhere support to work around printers that only advertise
  color raster support but really also support grayscale (Issue #1)
• ipptool now supports DNS-SD URIs like ipps://My%20Printer._ipps._tcp.local
  (Issue #5)
• The scheduler now allows root backends to have world read permissions but not
  world execute permissions (Issue #21)
• Failures to bind IPv6 listener sockets no longer cause errors if IPv6 is
  disabled on the host (Issue #25)
• The SNMP backend now supports the HP and Ricoh vendor MIBs (Issue #28)
• The scheduler no longer includes a timestamp in files it writes (Issue #29)
• The systemd service names are now "cups.service" and "cups-lpd.service"
  (Issue #30, Issue #31)
• The scheduler no longer adds the local hostname to the ServerAlias list
  (Issue #32)
• Added LogFileGroup directive in "cups-files.conf" to control the group
  owner of log files (Issue #34)
• Added --with-max-log-size configure option (Issue #35)
• Added --enable-sync-on-close configure option (Issue #37)
• Added --with-error-policy configure option (Issue #38)
• IPP Everywhere PPDs could have an "unknown" default InputSlot (Issue #44)
• The httpAddrListen function now uses a listen backlog of 128.
• Added USB quirks (Apple issue #5789, #5823, #5831)
• Fixed IPP Everywhere v1.1 conformance issues in ippeveprinter.
• Fixed DNS-SD name collision support in ippeveprinter.
• Fixed compiler and code analyzer warnings.
• Fixed TLS support on Windows.
• Fixed ippfind sub-type searches with Avahi.
• Fixed the default hostname used by ippeveprinter on macOS.
• Fixed resolution of local IPP-USB printers with Avahi.
• Fixed coverity issues (Issue #2)
• Fixed httpAddrConnect issues (Issue #3)
• Fixed web interface device URI issue (Issue #4)
• Fixed lp/lpr "printer/class not found" error reporting (Issue #6)
• Fixed xinetd support for LPD clients (Issue #7)
• Fixed libtool build issue (Issue #11)
• Fixed a memory leak in the scheduler (Issue #12)
• Fixed a potential integer overflow in the PPD hashing code (Issue #13)
• Fixed output-bin and print-quality handling issues (Issue #18)
• Fixed PPD options getting mapped to odd IPP values like "tray---4" (Issue #23)
• Fixed remote access to the cupsd.conf and log files (Issue #24)
• Fixed the automated test suite when running in certain build/CI environments
  (Issue #25)
• Fixed a logging regression caused by a previous change for Apple issue #5604
  (Issue #25)
• Fixed fax phone number handling with GNOME (Issue #40)
• Fixed potential rounding error in rastertopwg filter (Issue #41)
• Fixed the "uri-security-supported" value from the scheduler (Issue #42)
• Fixed IPP backend crash bug with "printer-alert" values (Issue #43)
• Removed old Solaris inetconv(1m) reference in cups-lpd man page (Issue #46)
• Fixed default options that incorrectly use the "custom" prefix (Issue #48)
• Fixed a memory leak when resolving DNS-SD URIs (Issue #49)
• Fixed systemd status reporting by adopting the notify interface (Issue #51)
• Fixed crash in rastertopwg (Apple issue #5773)
• Fixed cupsManualCopies values in IPP Everywhere PPDs (Apple issue #5807)

Enjoy!