Updated NEWS for integration of Deepak Patankar's GSoC 2018 project on cups-browsed.
NEWS - OpenPrinting CUPS Filters v1.23.0 - 2019-05-16
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+CHANGES IN V1.24.0
+
+ - cups-browsed: Integration of Deepak Patankar's Google Summer
+ of Code 2018 with the main goal of clustering different
+ printers and automatically selecting the destination
+ printers by job content and option/attribute settings. All
+ changes of this release are done by Deepak as parts of his
+ project.
+ - cups-browsed, implicitclass: Support for mixed clusters of
+ remote CUPS queues and IPP network printers. For this PPD
+ files of remote CUPS queues are generated by cups-browsed
+ based on IPP queries, as for native IPP printers, the number
+ of jobs for load balancing is polled in a way that it works
+ also with native IPP printers, the implicitclass backend
+ sends jobs directky to the printer instead of re-queueing
+ them via CUPS.
+ - cups-browsed: Merge IPP attributes of several printers to
+ combined attributes for the cluster to generate the
+ cluster's PPD file, including PPD constraints for option
+ combinations not fulfillable by any of the member printers,
+ and finding reasonable, non-conflicting default settings,
+ - cups-browsed: Selection algorithm for the destination
+ printer for a job sent to the cluster. Based on the job
+ settings requested such as page size, media type, print
+ quality, ... the best most suitable printer in the cluster
+ for the job will be selected.
+ - cups-browsed, implicitclass: Filter jobs to clusters already
+ locally. Due to the fact that a cluster's member printers
+ are not exclusively non-raw CUPS queues with the complete
+ filtering framework on the remote server, but also native
+ IPP printers, we need to support generic driverless printers
+ as destination. So we cannot pass on the input data
+ unfiltered but need to filter locally. We let the cluster's
+ PPD file emulate a PDF printer, letting the local CUPS queue
+ of the cluster run pdftopdf and any pre-filters to turn the
+ input into PDF and we let the implicitclass backend turn PDF
+ into a format understood by the destination printer,
+ supporting the 4 formats of driverless IPP printing: PDF,
+ PWG Raster, Apple Raster, PCLm.
+
CHANGES IN V1.23.0
- pdftops, mupdftoraster: Let pdftops call mutool directly and
