- Update to gnuplot 5.2.2
* NEW splot ... with lines title at {beg|end}
* FIX allow mixed use of in-key plot titles and manually placed titles
* FIX prevent runaway iterations of the form plot for [i=start:*] ...
* FIX handle in-line range limits for linked or nonlinear axes
* FIX restore pre-5.2 interpretation of logscaled tic increment as a multiplier
* FIX logscale tic placement is closer to that of versions before 5.2.0
* FIX recheck inrange/outrange points after spline or bezier smoothing
* FIX sampling on x2 if linked to x1; e.g. plot sample [t=1:5:1] '+' axes x2y1
* FIX empty range on logscale y axis is handled by auto-extending the range
* FIX autoscaling xrange of stacked histograms
- Add now missed TEXDIR at configure time which now includes also
the sub path tex/latex/gnuplot/ below /usr/share/texmf/ (could
become removed with some of the next version updates?)