KeyV2/TODO.md

TODO:

• Make flat stem support default
• implement regular polygon for skin extrusions
• switch to skin-shaped extrusions by default
• kailh choc has a non-square key unit; should I get that working for layouts etc?
• move everything over to layouts requiring a child key
• add an "errors" or "warnings" or "suggestions" echo section in key.scad, right when the key is being made, so the errors don't get lost / repeated