pg2plplot/pgsci(): back to adapted (old?) colour mapping?
pg2plplot: replace psc/ps drivers with epscairo.
pg2plplot/pgopen(): recognise qtwidget and xcairo as screen output.
pg2plplot/pgolin(): tidy up.
pg2plplot: turn pgolin() from dummy to (almost fully) working.
pg2plplot/pgopen(): remove call plmkstrm() since it seems to crash.
pg2plplot: rename PGPLOT xserve to PLplot xwin.
LICENCE: add licence file to repo.
gfortran: add -Wno-function-elimination compiler flag.
CMake: don't set CMAKE_BUILD_TYPE, CMAKE_CONFIGURATION_TYPES.
Rearrange colours to match pgplot order better. Set pen colour to black in do_init().
Add do_init() call to pgsvp(). Add pgvport() alias. pg2pldev(): provide file name if not specified.
Add subroutine pgwnad(): Set window and adjust viewport to same aspect ratio.
Update CMake files to find PLplot v5.13