v0.3.0

Popular images are now pre-indexed in range-index, so their first run is lazy too.

• Range fetches layer indexes from the catalog, all at once. RANGE_INDEX_URL sets another catalog, off turns it off.
• range index IMAGE... builds indexes for a catalog. No root needed.

curl -fsSL https://github.com/andreygrehov/range/releases/latest/download/range_$(uname -s)_$(uname -m).tar.gz | tar -xz
./range shell python:3.12