databento 0.78.0

Release notes

Enhancements

• Added time-based backpressure to the live client: pauses reading records from the live
  gateway when the internal queue spans more than 1 second of data by ts_index
  (ts_recv when present, otherwise ts_event)
• Upgraded databento-dbn to 0.58.0:
  • Added flat per-level properties (bid_px_00, pretty_ask_px_03, etc.) to the
    Python MBP1Msg, MBP10Msg, BBOMsg, CMBP1Msg, and CBBOMsg record classes
    for parity with the DataFrame layout
  • Added INDEX InstrumentClass variant
  • Added StatType variants INDICATIVE_CLOSE_PRICE and VENUE_SPECIFIC_PRICE_1