solidart-v3.0.0-dev.2

• FEAT: Resource now exposes previousReady and previousError — the most recent ready / error state, retained across any number of intervening transitions (unlike previousState, which remembers only the single prior state). Handy to keep a UI populated across repeated refresh failures, e.g. resource().asReady?.value ?? resource.previousReady?.value. Gated by trackPreviousValue.