v0.29.0 * Make the TenaciousProxyStorage retry when a single object add fails * Move all proxy storages in swh/storage/proxies/ * Deprecate the "local" storage cls in favor of "postgresql" * cassandra: Add tests checking directory_add and snapshot_add are atomic. * Add endpoint directory_get_entries, to quickly list a directory's entries * content_get: Add support for queries by sha1_git