Log Message:
archivers/arqiver: update to 0.7.0

-Handle newlines and text tabs in item names as far as possible.
-Natural sorting of items by treating dot as a separator.
-Set the window title to the archive name.
-Added context menu to the archive path bar for copying path and opening
containing folder.
-Use 7z for uncompressed disk images and bsdtar for compressed ones.
-Added fallback icons for files and folders.
-Fixed emblemized icons with device pixel ratio.