v2.13 June 2005 :
        (Hopefully) fixed a small bug in the spline parser. This was rarely
	used so went undetected for a long time.
	
v2.12 May 2005 :
        Added some commandline controlled filter options to the filter
        routines : linetypes (some standard DXF types), linewidths, color
	numbers ((xfig colornumber or RGB number for the plot programs)
	and depth-indices (the layernames converted to an index number 
	starting at 50).

v2.11 April 2005 :
        Fixed a small bug that resulted in closing the input stream twice,
        which caused complaints on the latest glibc versions.

v2.10 : Enabled support for recursive (nested) inserts (blocks). Seems to
	work fine without memory problems, but is not guaranteed yet ;-)
	Fixed some small bugs (e.g. free in spline and lwpoyline handling).
	Also started working on a rudimentary filter, e.g. filter on
	color(s),layer(s), or coordinates (clipping). 

v2.09 : Simple support for SPLINE entities by converting the fit points to a
	polyline (if any). Also added new "-v" verbose option.

v2.08 : Now also accepts files with extension .DXF (instead of .dxf)
	and generates an output filename if not supplied on cmdline.

v2.07 : Slightly improved text rotation for MTEXT object : now also listens
	to code 72 (either left to right or top to bottom) and some
	rudimentary support for code 12 == 1.0 (90 deg. rotation in XY plane
	for the X-axis direction).

v2.06 : Fixed a small bug that made the first entity in the main block or
        in any insertion block to be skipped.
	Added simple support for DIMENSION entities (measures and angles).

v2.05 : Added some horizontal and vertical text justification stuff. Added
        text filter to process and/or remove embedded '\' instructions in
	text strings (like \P to start a newline and \F font switches).
	These could otherwise confuse xfig and/or result in text containing
	newlines (\P) to be printed in the wrong way.

v2.04 : Added simple MTEXT as well. Does the same as TEXT and so doesn't
        handle more than 250 characters yet. However this probably almost
	never happens anyway so shouldn't be too important (?).

v2.03 : Moved main() block from backend dxfread.c to frontend dxf2fig.c and
	dxfplot.c. This made the calling mechanism more clear and also
	allowed for optional commandline parameters to set papersize and/or
	viewplane.

v2.02 : Introduced extra optional parameter to set xfig papersize (A0 .. A4)
        Conversion layer -> depth now leaves extra space between depths to
	allow for depth insertion later.

v2.01 : Fixed a small bug where the dimension counter (either 2 or 3) wasn't
	always reset properly and so in some cases could reached higher
	values than 3, thereby corrupting the memory. Thanks to Brian Smith
	for the pathological dxf file that helped me solving this :)

v2.00 : Initial release for Linux with xfig support.

v1.00 : First release for Atari ST : only parser + plotter, no structures
        and only global variables due to weak C-compiler, no fig conversion.