kvdb

• Removed parity-util-mem support. #696

Breaking

• Removed fn restore from KeyValueDB trait. #662
• Streamlined API. #661
  • fn get_by_prefix return type changed to io::Result<Option<DBValue>>
  • fn has_prefix return type changed to io::Result<bool>
  • Iterator item changed to io::Result<DBKeyValue>
• Updated parity-util-mem to 0.12. #680

Breaking

• Migrated to 2021 edition, enforcing MSRV of 1.56.1. #601
• Updated parity-util-mem to 0.11. #623

Breaking

• Updated parity-util-mem to 0.10. #556

Breaking

• Updated parity-util-mem to 0.9. #510

Breaking

• Updated parity-util-mem to 0.8. #470

• Updated parity-util-mem to 0.7. #402

Breaking

• Removed write_buffered and flush methods. #313
• Introduced a new DeletePrefix database operation. #360
• Renamed prefix iteration to iter_with_prefix. #365

• License changed from GPL3 to dual MIT/Apache2. #342
• Remove dependency on parity-bytes. #351
• Updated dependencies. #361

• Bump parking_lot to 0.10. #332

• Updated features and feature dependencies. #307

• I/O statistics API. #294
• Removed KeyValueDBHandler trait. #304

Changed

• Default column support removed from the API
  • Column argument type changed from Option<u32> to u32
  • Migration None -> unsupported, Some(0) -> 0, Some(1) -> 1, etc.
• Remove ElasticArray and change DBValue to be a type alias for Vec<u8> and add a DBKey backed by a SmallVec. #282

Dependencies

• Updated dependencies. #239

Changed

• Migrated to 2018 edition. #205