0.12.0

Release notes

Enhancements

• Added map_symbols support to Python Transcoder
• Added new publisher variants in preparation for DBEQ.PLUS dataset
• Added from_dataset_venue function to Publisher to facilitate destructuring
• Implemented Default for most records to make testing easier
• Added from_zstd function to AsyncDbnEncoder to match synchronous encoder
• Added re-exports for enums::flags, enums::rtype, record::BidAskPair,
  record::RecordHeader, and record::WithTsOut to simplify imports
• Added --fragment CLI flag for writing DBN without the metadata header
• Added --input-dbn-version CLI option for specifying the DBN version of a DBN
  fragment
• Added serde::Deserialize implementations for Dataset, Venue, and Publisher
• Added support for Python 3.12 to databento_dbn
• Added RecordDecoder::with_version for future use when dealing with compatibility
  between different DBN versions
• Added new dispatch macros: rtype_ts_out_method_dispatch,
  rtype_ts_out_async_method_dispatch, rtype_method_dispatch, and
  schema_ts_out_method_dispatch
• Added InstrumentDefMsgV2 and SymbolMappingMsgV2 for forward compatibility with a
  version of DBN
• Added TsSymbolMap and PitSymbolMap to aid with both historical and live symbology
  • Added support for inverse symbology, i.e. with stype_in=InstrumentId

Breaking changes

• Changed Metadata::symbol_map to return TsSymbolMap
• Changed Metadata::symbol_map_for_date to return PitSymbolMap
• Changed Default implementation for BidAskPair by setting prices to UNDEF_PRICE
• Added new publisher values in preparation for DBEQ.PLUS
• Added ts_out parameter to encode_header_for_schema in CsvEncoder and
  DynEncoder to allow controlling whether "ts_out" is in the header
• Added from_dataset_venue function to Publisher to facilitate
  destructuring.