v1.6.0

What's Changed

• Improve cache by @jm-rivera in #34

• Adds use_raw_cache=False to bulk_download_crs, download_crs_file, bulk_download_dac2a
  and bulk_download_multisystem for the cases where you want to bypass the bulk cache and
  re-download fresh on every call. Caching remains on by default.
• Adds a typed BulkPayloadCorruptError (importable from oda_reader) for the rare case
  where a freshly downloaded zip arrives corrupt. The corrupt entry is removed before the
  exception is raised, so the next call cleanly re-downloads. The error message tells you
  what to do next.
• Strengthens corruption detection by validating freshly downloaded zips end-to-end (full
  member CRC check), not just the central directory. Cached files are trusted on hit so
  this doesn't slow normal use.
• The bulk cache now self-maintains: it keeps the two most recent downloads per dataset
  and evicts older ones, and sweeps stale temp files left behind by interrupted downloads
  (older than 24h) on startup. No more manually clearing the cache directory to free space.
• Temp-file naming now includes the hostname alongside the PID, preventing collisions when
  the cache directory lives on a shared / NFS mount used by multiple machines.
• clear_cache, set_cache_dir, enable_cache and disable_cache now emit a
  DeprecationWarning for users who also import oda_data, pointing at the umbrella
  oda_data.cache.* API. Standalone oda_reader users see no warning. The shims continue
  to work through the 1.x series and will be removed in 2.0.
• Cache directory is now versioned by the installed package version (via importlib.metadata) rather than a hardcoded string, so upgrades automatically invalidate old caches that may contain partial or corrupt downloads from prior versions.
• Bulk-download cache writes are now atomic: downloads stream into a sibling temp file and are only renamed over the destination on success, so partial downloads no longer pollute the cache on interruption or error.
• On BadZipFile, the corrupt cached archive is removed so the next call cleanly re-downloads instead of looping on the same poisoned entry.
• Cached archives are validated with zipfile.is_zipfile before reuse; a corrupt entry is removed and re-downloaded transparently.

Full Changelog: v1.5.1...v1.6.0