Merge branch 'develop' into feature/device-connection-modals

package.json

src/components/forms/label.css

src/components/gui/gui.css

src/components/prompt/prompt.css

src/components/prompt/prompt.jsx

src/components/sprite-info/sprite-info.css

src/components/sprite-info/sprite-info.jsx

src/components/sprite-selector/sprite-list.jsx

src/containers/backpack.jsx

src/containers/blocks.jsx

src/containers/prompt.jsx

src/containers/target-pane.jsx

src/lib/backpack-api.js

src/lib/backpack/sprite-payload.js

src/lib/make-toolbox-xml.js