weldbox v0.2.1

What's fixed in 0.2.1

Vendor spelling: the tube laser vendor is RMFG (rmfg.com); earlier
releases misspelled it rfmg throughout. The vendor slug, catalog data,
profile ids, docs, and examples now all use rmfg.

Backwards compatible: vendor: rfmg in existing spec files still loads
(kept as an alias), but new specs should use vendor: rmfg.