v2021.3.1

Added

• Import LDraw Model can now import BrickLink Studio models as well.
• Editing a field while multiple rows are selected will change the value in all selected rows.
  You can also navigate within a selection with Ctrl+cursor keys (Cmd on macOS), so you don't
  have to use your mouse at all.
• Copy remarks from document got extended to Copy fields from document and can now copy and
  merge any field in multiple ways from one document to another (e.g. merging in prices from another
  document using weighted averages).
• The context menu is really context sensitive now and will only show specific field commands for
  the clicked column.
• BrickStore will now restore all the saved documents in your last session on startup (this can be
  disabled in the settings dialog).
• The separate Difference Mode is gone. Instead it is always active and works on all fields. Just
  like with errors, you can choose to show or hide the difference markers via the View menu. This
  makes it possible to Mass-Update all possible fields in your BrickLink store from within
  BrickStore.
• The status bar moved to the top of the document and got more interactive: clicking on Errors or
  Differences will jump to the next one (also available on the keyboard: F5 or F6).
• Experimental support for distribution independent Linux AppImage builds.

Improvements

• Sorting and filtering are now independent operations again: the filter edit has a specific
  re-apply filter button now and clicking on the last sorted column header will re-sort the list.
• All import dialogs are non-modal now to allow multiple imports easily.
• High-DPI support has been enhanced.
• Multi-threaded price guide loading to (partially) compensate for the slow I/O on Windows.
• Faster document loading and saving.
• Undo/redo actions are now named exactly after the action that triggered them.
• The update check can now download and start the new installer for you.
• All numbers should now show with localized thousand's separators.
• Set-to-price-guide will now block the current document until it is finished. This is to prevent
  odd behavior if you played around with undo/redo too much while the download was happening in the
  background, plus you can undo the whole operation in a single click on Undo now.
• Clicking on the logo/progress circle in the top, right corner gives you the option to cancel all
  current downloads (pictures and price guides).
• Updating the BrickLink order list is a lot faster now.
• There is now an option to set a default for part-out operations within documents.
• All open and save file dialogs remember the last used directory during a session.
• Renovated the price increase/decrease dialog.
• The modify item and color dialogs remember their last state and geometry. You can reset their
  size and position to be centered on the currently active item by double-clicking the title bar.

Please read the installation instructions.

I've also started a page with tutorials.