Breaking

• Dropping support for older React. Currently supported versions are ^0.14.9 || ^15.3.0

Changes

• Upgraded all React components to use ES6 classes
• Replace React.PropTypes with prop-types package

PRs:

• #463 @MichaelDeBoey Use 'react-dom/test-utils' package instead of 'react-addons-test-utils'
• #462 @MichaelDeBoey Update deprecated 'create-react-class' dependencies in tests to ES6 classes
• #460 @nkbt Split tests in Travis and use Node 6
• #458 @MichaelDeBoey Update peerDependencies to be compatible with 'prop-types' package
• #457 @ifndefdeadmau5 Use ES6 classes in ‘Motion.js’
• #455 @Holi0317 Use ES6 class style for creating react components