v70.1.0

Full changelog

• General
  • Add back delay_ping_lifetime_io=true functionality by using an in-memory table (#3590)
  • Add mechanisms for storing and retrieving submitted pings (#3585).
    • Add new submitted_pings table to the SQLite database.
    • Add methods to store, retrieve, update, and clear stored submitted pings.
    • Update Ping and uploader implementations to store and update submitted pings as appropriate.
• Python
  • Treat C as an undetermined locale (#3633)