cds 4.007

Miscellanous fix's: Join command now shows a difference in height and a difference in design height. Drawing triangles on screen was ignoring the triangle color in File -> Plot Parameters -> Contours now fixed. Bug fix in import DWG. Possible overflow in point code.

CDS 4.006

Some bug fix's in roadworks. Could get confused with multiple roads. Cross section printing routines could crash on section plots.