PeaZip 8.1.0 (64-bit)

What's new in this version:

Backend:
Pea 1.02:
- Improved speed of hex preview function, updated secure delete function

Zstd 1.50:
- (Windows) Tino Reichardt codecs for 7z v1.5.0r1
- updates codecs to Brotli 1.0.9, FLZMA2 1.0.1, Lizard 1.0, LZ4 1.9.3, LZ5 1.5, Zstandard 1.5.0
- (Linux) szcnick p7zip 17.04:
- introduces support for Brotli, Lizard, LZ5
- updates LZ4 1.9.3 and zstd 1.4.9
- on Linux systems Brotli and Zstandard presets now points to single step compression in 7z using Brotli or Zstd compression (tar.br and tar.zst presets are still available as alternative)
- (Windows) added support for system's Extrac32 as alternative CAB extraction engine
- Extrac32 backend be enabled in Options > Settings, Advanced tab
- CAB will be still listed/tested using 7z backend, Extrac32 (if enabled) will be used for for extraction operations

Code:
Various fixes:
- Improved performances working with archives containing large number of items (files, folders)
- on 64K items archive 50% speed increase, -25% RAM usage
- on 128K items archive 2x speed increase, -25% RAM usage
- on 256K items archive 4x speed increase, -35% RAM usage
- improved speed for listing archives, also minor speed improvements for test, archive and extract operations involving a large number of files

File manager:
- Added new user-provided themes: KDE Breeze, Oxygen
- Improved browsing archives: clicking on root in breadcrumb bar now simply lists root content, while pressing refresh (F5) re-opens the archive, fully re-parsing the content
- In case of spanned archive, the number of volumes actually found in current path (as required by PeaZip for extraction) is shown in application's title bar and status bar
- Improved Settings
- More flexible Browser optimization in General tab, Performances group
- Reorganized various settings for better readability
- Updated translations

Extraction and archiving:
- Added support (as container files) to .whl Python archives and .gem Ruby gem archives
- Added option to extract all, selected or displayed items to extraction dropdown menu, replicating Extract button context menu
- Added actions to Test all, selected or displayed items in Test button context menu
- Improved archive conversion procedure
- Extraction stage is now shown as a single sequence of tasks, and main screen is hidden to reduce visual clutter
- If errors are encountered in extraction stage it is reported to user, so conversion can be stopped (to correct errors) or continued if desired
- Improved extraction command line creation: when all items are selected switch to a more compact command line using filters rather than item's list