2019.11

• Improved support for libubootenv
• rework swuforwarder, fix corruption
• support system update
• drop legacy webserver
• support more as one instance of SWUpdate on the same target
• improve support for Debian
• Parser:
  • regexp for hardware compatibility check
  • new attribute: install-if-higher
  • hook support for bootloader section
  • new attribute: output to save SWU
  • bootloader_marker ("recovery_status") deactivable
• Handlers:
  • ubiswap: atomic switch of UBI volumes
  • SSBL : switch between sw set with own structure
  • introduce handler without data
  • ubivol: auto-resize of volumes
  • fix rdiff handler
  • archive: set locale
• Security:
  • support for rsa-pss
  • support for MBEDTLS
• Lua:
  • export swupdate_progress_update
• Compression:
  • added support for zstd
• Documentation:
  • general improvements and fixes
  • links to newer talks about SWUpdate
• Webserver:
  • fix hang if connection is broken