Merge branch 'develop' into sound-editor--effects-backend

.babelrc

.travis.yml

README.md

package.json

src/components/forms/input.css

src/components/gui/gui.css

src/components/gui/gui.jsx

src/components/sound-editor/icon--redo.svg

src/components/sound-editor/icon--undo.svg

src/components/sound-editor/sound-editor.css

src/components/sound-editor/sound-editor.jsx

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

src/containers/sound-editor.jsx

src/containers/stage.jsx

src/lib/audio/audio-recorder.js

src/lib/layout-constants.js

src/lib/libraries/costumes.json

test/helpers/selenium-helpers.js

test/integration/test.js

.../unit/components/__snapshots__/sound-editor.test.jsx.snap