- Update to gnuplot 5.4.7
* FIX pseudofiles '+','++' must ignore "set datafile columnheader" Bug #2585
* FIX data from an array must ignore "set datafile columnheader" Bug #2585
* FIX various problems with unbounded plot iteration Bug #2589
* FIX allow plot ... smooth acsplines with filledcurves Bug #2592
* FIX "plot title at {end|beginning}" belongs in KEYSAMPLE layer
* FIX handle empty string in last field of csv file
* FIX Handle nonlinear axes during contour generation Bug #2593
* FIX yerrorbars key sample should match bars in the plot Bug #2598
* FIX "plot with table" must skip all smoothing operations Bug #2610
* FIX cairolatex/epslatex: prevent doubled text in opaque textboxes
* FIX wxt: versions prior to 3.0 do not support XDG Bug #2587
* FIX wxt: fontscale and fontsize handling was inconsistent Bug #2373
* FIX tikz epslatex cairolatex: updated to work with TeXLive2023 Bug #2613
* FIX correctly report cardinality of an empty array is zero Bug #2616
* FIX ignore datafile separator when plotting from an array
* FIX combination of pm3d options "at b" or "at t" with "depthorder"
* FIX combination of 'autotitle columnhead' and 'using col("key")' Bug #2620
* FIX do not complain if XDG files are not found because no $HOME Bug #2623
* FIX windows terminal: arrow length corrected for aspect ratio Bug #2565
- Delete patch gnuplot-5.4.4-grep.patch now upstream

- Update to gnuplot 5.4.7
* FIX pseudofiles '+','++' must ignore "set datafile columnheader" Bug #2585
* FIX data from an array must ignore "set datafile columnheader" Bug #2585
* FIX various problems with unbounded plot iteration Bug #2589
* FIX allow plot ... smooth acsplines with filledcurves Bug #2592
* FIX "plot title at {end|beginning}" belongs in KEYSAMPLE layer
* FIX handle empty string in last field of csv file
* FIX Handle nonlinear axes during contour generation Bug #2593