staircase.scad syntax error

[the-robo]

Line 31: circle(r=core_radius+step_width,h=step_depth);

There is no h parameter for circle();

Line 31: circle(r=core_radius+step_width);

Works for me.

Not sure this is an issue, however Microsoft 3D builder complains "One or more objects are invalidly defined."
But the "Click to repair" fixes it.

[KitWallace]

Fixed and code update to version 2021-01 by removing assign() and child() to children()