v1.1.0

Added

• A Settings window for tuning read/backup behaviour, persisted to the user config. It exposes the
  libdvdcss CSS crack mode and verbosity, the disc-open retry count and delay, the read buffer size,
  and the raw SCSI read retry count and max transfer size, with a "Restore Defaults" option. Settings
  added in newer versions are backfilled with their defaults when loading an older config file.
• A configurable optical drive read speed (Settings -> "Drive read speed"), requested from the drive
  via SCSI SET STREAMING when a disc is loaded. Set as a DVD speed multiplier (e.g. 6x; 1x = 1385
  KB/s), defaulting to 6x; 0 leaves the drive at its own default. Drives may ignore or cap it (notably
  firmware riplock on DVD-Video), so it is best-effort.

Changed

• Updated pydvdcss to 1.5.0.
• libdvdcss is now provided by the pydvdcss package, which bundles it in its Windows wheels;
  Slipstream no longer vendors its own libdvdcss DLL.

Fixed

• Sectors that libdvdcss cannot read (e.g. unreadable tail sectors, or sectors outside the logical
  volume) are now recovered with a raw SCSI read of the drive (Windows SPTI) instead of being
  zero-filled, so the backup keeps the real data wherever the drive can still return it. A genuinely
  unreadable encrypted sector is still reported as a read error.
• libdvdcss read errors now surface with their actual message instead of crashing while being formatted.