Log Message:
Changes in 5.0.7
NEW set term {pngcairo|pdfcairo} pointscale <factor>
NEW "save fit" back-ported from version 5.2 as a replacement for \ 
"update"
CHANGE deprecate "update" command (but do not remove it)
CHANGE allow placement of circles in 3D plots using axis coordinates
CHANGE ignore invalid z coordinate for 3D objects placed in "set view map"
CHANGE distinguish 'bind "shift-Button1"' from 'bind "Button1"'
CHANGE use Mingw-w64 and MSVC popen rather than built-in "fake" popen
FIX rangelimited y2 axis could produce spurious diagonal line across plot
FIX assignment of x/y dimensions in "binary record=(a,b) ... with image"
FIX negative array index caused by hidden3d degenerate polygon
FIX object clipping in "set view map"
FIX cairo terminals: scale textbox border linewidth by terminal linewidth
FIX canvas terminal: initialization of plot dimensions (affects first zoom)
FIX crash in stats if no usable data is found
FIX do not use LaTeX formatting in tabular output
FIX additional sanity checks for input data format
FIX more consistent handling of plot 'with table'
FIX incorrect, possibly empty, command string was saved for previous fit
FIX 2D images with logscale axes could fail (segfault)
FIX nested iteration containing an empty range