Log Message:
archivers/arqiver: update to 0.6.0

V0.6.0
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 * Added an option to (not) stretch the first column.
 * Added app icon.
 * A workaround for a Qt bug that might give a too small height to rows if the \ 
horizontal scrollbar isn't at its minimum value when items are removed.
 * Better names for extraction folders of archives without parent directories.
 * Scroll to the current item when expanding or filtering.
 * Fixed startup invisibility with some window managers.
 * Updated the code for Qt 5.15.