Release 5.2.8

[Ethan M. (UW) <me...@uw...>]

The gnuplot release 5.2.8 source tarball is ready and can be downloaded from

    https://sf.net/projects/gnuplot/files/gnuplot/5.2.8/gnuplot-5.2.8.tar.gz

There is not much in this update other than minor bug fixes,
mostly addressing individual terminal quirks.

This is the final planned release for gnuplot version 5.2.

I will create a new 5-4-stable branch of the git repository and
re-label the development trunk as 5.5.

Expect a 5.4.rc1 early next year, to be followed by however many
-rcX iterations are necessary to get a solid 5.4 for Spring 2020.


Changes in 5.2.8
================
* CHANGE user-visible GPVAL_TERM_HCHAR GPVAL_TERM_VCHAR (help debug font issues)
* CHANGE placement of ylabel (compromise 5.2.7 and earlier versions) (Bug #2181)
* CHANGE make strstrt() aware of UTF8, e.g. strstrt("αβγ5", "5") returns 4
* FIX "set timestamp" from "save" must not include a justification (Bug #2178)
* FIX set cntrparam levels increment <base>, <factor> for logscale z (Bug #2183)
* FIX character pointtypes should inherit plot coloring like normal pointtypes
* FIX bad autoscaling of linked y2 axis (Bug #2186)
* FIX prevent infinite loop from unbounded interation in a non-data plot command
* FIX dimensions reported by "stats matrix every" (Bug #2189)
* FIX extent of boxplot whiskers could be off by one point (Bug #2106)
* FIX mix unbounded iteration and functions in a single plot command (Bug #2201)
* FIX reverse history search with readline=builtin (Bug #2209)
* FIX qt: suppress off-by-one ysize (Bug #1759)
* FIX cairo: suppress off-by-one ysize (Bug #1759)
* FIX gd: apply alpha to brushstroke lines (Bug #2117)
* FIX tikz: fixes to accommodate lua 5.3 and newer pgf
* FIX wxt: ExportToFile widget disabled in persist mode (Bug #2185)
* FIX qt: handling of modifier keys (ctrl alt shift) for keyboard events
* FIX wxt: handling of modifier keys (ctrl alt shift) for keyboard events
* FIX fig: dashtype "solid" was not passed through correctly to transfig
* FIX gd: incorrect line spacing of multiline label (Bug #2215)

Note:
  Windows binaries will be delayed; please be patient.

	cheers, and happy plotting

		Ethan