v0.5 - not yet released

Link your wing structures together to make multipanel wings. For example a classic “polyhedral” glider wing.
Much improved (and far more buildable) control surface and hinge designs.
Support for flat stock trailing edges (similar to the guillows style wing builds.)
Vastly improved part nesting in the layout sheets.
I have actually used the program for some laser cut tests! This is exciting.

v0.4 - December 27, 2013

Control surfaces! Specify the hinge line and the start/end station and your control surface is built automatically. Supports multiple independant control surfaces per wing.
Version checking. Alert if a newer version is available for download.
Warn if trying to build before all design changes have been saved.
Delete wings from previous design when opening a new design.
Spars are now always vertically aligned after rib is rotated for twist/washout.
Stringers are always aligned flush/tangent to the surface of the rib.
Saved .mad files (xml format) are now beautified rather than all stuffed together on a single line (better for version control or human editing.)
If asking to view the design in 3d, check if file is saved (clean) and built since last save.
Fix output of .svg (plans/templates/laser cutter sheets) so they are created in the same folder as the original .mad file.

Add a suite of examples that illustrate many of the software’s capabilities.
Support for curved chord/taper wings. This is done by defining a spline curve that evaluates to the chord at that point in the wing. See docs and examples for more details.
Support for curved sweep wings. This is probably a less useful feature, but is available nonetheless. Instead of specifying a sweep angle, a spline curve can define the amount of forward/aft shift of the wing ribs relative to the span of the wing. Again see the docs for specific explanation and examples.

Add helper functions for selecting root and tip airfoils.
Support for separate size root and tip chords (allows generation of tapered wings.)
Changes to combo box trigger internal change detection.
Clean/dirty management, system suggest save if design is changed before quitting or loading a new design.
Deleted structures also make the model ‘dirty’ (needs to be saved.)
Bug fixes. (Found an edge case in the generation of 3d sheeting that was exposed on wings that blend from one airfoil to another.)

Switch to using a polygon clipping library for many internal functions (making cutouts much more robust.)
Wing skinning
Shaped lightening holes (that follow the interior contour of the rib)
Support for “linked” wing panels (i.e. a polyhedral glider wing.)
Visualize the exact model that is generated in 3d.
Variety of bug fixes and clean ups.

Initial revision
Airfoil blending, scaling, rotation
Smoothing, resampling, and adaptive fitting of airfoil curves
Cutting out basic shapes from airfoils for leading/trailing edges, spars, stringers, lightening holes, etc.
Best fit of leading edge cutout.
Best fit of trailing edge stock to airfoil shape.
Generates actual size build plans
Supports curved chord/taper function
Supports curved sweep function
Higher level function: cut flaps or ailerons into the wing structure.