v0.2.1

v0.2.1

Markup using the command and commandfor attributes is now linted.

caniemail added command and commandfor attributes upstream, and the title
tables only derived attribute names from singular "X attribute" titles — the
one existing plural, srcset and sizes attributes, was reachable only because
it had been written into a hardcoded table. Both now come from one rule, so
the next multi-attribute feature is picked up without a release here.

The offline dataset snapshot both surfaces ship moves from 2026-07-20 to
2026-08-10: one feature added, none removed, and thirteen verdict cells
changed across css-inset and html-popover. Detection output is unchanged
on every fixture.

No API changes. Anything reading 0.2.0's output keeps working.