Updated NEWS for integration of Deepak Patankar's GSoC 2018 project on cups-browsed.

Author: tillkamppeter

NEWS

@@ -1,6 +1,46 @@
 NEWS - OpenPrinting CUPS Filters v1.23.0 - 2019-05-16
 -----------------------------------------------------
 
+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