React 16 upgrade

[bjankord]

Issue Description

When react 16 comes out, we'll want to enable compatibility with react 16.

Issue Type

• New Feature
• Enhancement
• Bug
• Other

Expected Behavior

Terra components are compatible with React 16

Current Behavior

N/A

[noahbenham]

Will any uplifts you perform be backwards compatible to consumers using React 15? We still have substantial work to do uplifting deprecated code.

[emilyrohrbough]

@noahbenham uplifts to use React 16 should remain compatible with React 15 as well.

[emilyrohrbough]

The React Team's progress in releasing v16 facebook/react#10294

[emilyrohrbough]

Third Party Dependencies Requiring React:

Good To Go	Dependency	Current Specified Version	React 16 Supported Version	Watch Issue
BLOCKED	enzyme	v^2.8.2	v^3.x	#198
✅	react-intl	v^2.2.3 & v^2.3.0	v2.4.0	Need to bump to v2.4.0
✅	react-redux	v^5.0.4	v4.4.7	N/A
✅	react-router	v^3.0.5	v3.2.0	Need to bump to v3.2.0
✅	react-modal	v^1.6.5	v3.0	Bump to v4 minimum....Closed: reactjs/react-modal#498
✅	react-router-dom	v^4.0.0	v4.0.2	Bump to 4.0.2....Closed: remix-run/react-router#5563

[emilyrohrbough]

This is blocked by:

• Update Enzyme to v3.x #198
• Release of terra-core React 16 support.

[emilyrohrbough]

Upon checking the react-modal commit history, React 16 compatibility is available in v3.0, however, I noticed a message indicated v4.0.0-beta.5 replaced PropTypes with the prop-types library. To ensure not warnings occur, we should bump to a minimum of v4.0.0.

[emilyrohrbough]

Unblocked by #198. However will need to implement enzyme-adapter-react-16.