Merge pull request #4105 from metabase/merge-release-0.22.0

bin/version

frontend/src/metabase/components/ColorPicker.jsx

frontend/src/metabase/components/HeaderBar.jsx

frontend/src/metabase/components/Modal.jsx

frontend/src/metabase/css/components/modal.css

frontend/src/metabase/css/home.css

frontend/src/metabase/lib/expressions/index.js

frontend/src/metabase/lib/expressions/parser.js

frontend/src/metabase/lib/query.js

.../src/metabase/query_builder/components/DownloadWidget.jsx

frontend/src/metabase/questions/collections.js

...rc/metabase/questions/containers/CollectionEditorForm.jsx

...tend/src/metabase/questions/containers/CollectionPage.jsx

...lizations/components/settings/ChartSettingColorPicker.jsx

...izations/components/settings/ChartSettingColorsPicker.jsx

frontend/test/unit/lib/expressions/formatter.spec.js

frontend/test/unit/lib/expressions/parser.spec.js

frontend/test/unit/lib/query.spec.js

src/metabase/api/card.clj

src/metabase/api/dataset.clj