Each directory includes gerber + BOM files used for ordering from a PCBA service like JLCPCB.
Latest PCB version is rev3a
Used for ordering from JLCPCB or MacroFab.
https://github.com/goat-hill/kicad-pcba-scripts
First version sold on https://bitclock.io/
It does include a few extraneous components that were an attempt to support the unreleased BMV080 particulate sensor. I may have misinterpreted the preliminary datasheet so feel free to omit that connector and supporting capacitors. It also designs for an option side-USB port that I may omit in the future due to added routing complexity and it is unused.