+ some are doxy others are just comment code.
+ some minor whitespace and grammatical tweaks.
+ app/SCL/* typos have also been submitted upstream (https://github.com/stepcode/stepcode/pull/366). So it's ok to merge them in to master.
Materal editor is now funcional, abeit not complete. Can be used to
create and save new cards. Lauch from within FreeCAD with
import MaterialEditor; MaterialEditor.openEditor()