Merge pull request #91 from miek/clippy-fix-map-cloned

clippy: use `cloned()` instead of `map(Arc::clone)`

Merge pull request #90 from martinling/column-view

Switch from ListView to ColumnView.

Merge pull request #88 from martinling/update-deps

Update all remaining dependencies to current versions.

Update humansize dependency to current v2.1.3 release.

Update gtk4 dependency to current 0.8.0 release.

Merge pull request #87 from martinling/anyhow-fixes

Fix handling of worker thread results.

Display causes of errors.

Merge pull request #86 from greatscottgadgets/dependabot/pip/docs/readthedocs-sphinx-search-0.3.2

Bump readthedocs-sphinx-search from 0.3.1 to 0.3.2 in /docs

Merge pull request #85 from miek/revert-prelude-changes

Re-add unused prelude imports & squelch Clippy warnings about them