Gray out "Add Node/Winding" button when function not available.
No longer need to store placements by layer.
Snap network segment end nodes to nodes in other segments.
Split other segment at "snapped-to" node.
Refresh Windows and Linux icons.
Doc improvments.
Support Cut / Copy / Paste.
Fix for drivers not supporting instanced arrays.
Correct icon for non-ASCII bad objects.
Import Region UI.
Fix for unscaled planes in DSF pools, as used by facade wall type.
Support for bezier polygons and networks.
Refactor polygon node code.
Implement Import Region.
Always display String outline.
Correct Line mitreing cutoff.
Fix for importing AutoGenPoints from region.
Fix for Undoing operations on AutoGenPoints and on node drag.
Fix Line and String fallbacks.
Fix for DrapedImage allocation.
Fixes & optimisations for GL_SELECT-style picking.
Handle opening v8-style Facades with spurious wall type and beziers.