v0.1.0

Load shedding is rebuilt. The resident-cell limit is now a hard cap enforced at
admission, and pressure shedding is driven by RSS and CPU alone. RSS shedding is
on by default at 80% of available memory (the cgroup limit in containers); set
CELLD_MAX_RSS_MB to pin the ceiling, or 0 to disable. A full node declines new
placements instead of evicting a resident, one queued placement costs at most
one eviction, and a walk-down that stops returning memory halts instead of
emptying the node. CELLD_RESIDENT_LOW_WATER is now ignored.

Proxied responses stream between nodes; a truncated upstream body aborts the
read instead of buffering into an error. The replicator seeds its position at
activation, ending a listing storm on rate-limited stores. macOS nodes report
real memory usage. celld is relicensed Apache-2.0.