new version defaults, don't write r2000, but old versions asis
    
dwg readers would prefer r2000 or higher, oda can only read from r9 on,
but for the sake of sanity and less up/downconversions don't upconvert preR13 to r2000 per default.
only <r1.4 upconvert to r1.4, and >=r2004 down to r2000.
This way we have much less up/downconverting changes.

see branch work/write-prer13asis
change dwgwrite version defaults from r2000 to asis
This is a GitHub Issue
repo:libredwg
owner:LibreDWG
Title : change dwgwrite version defaults from r2000 to asis
Issue date:

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new version defaults, don't write r2000, but old versions asis
    
dwg readers would prefer r2000 or higher, oda can only read from r9 on,
but for the sake of sanity and less up/downconversions don't upconvert preR13 to r2000 per default.
only <r1.4 upconvert to r1.4, and >=r2004 down to r2000.
This way we have much less up/downconverting changes.

see branch work/write-prer13asis
--- end body ---
