Upgrade dependencies for React 16 update

[kylemh]

Description of changes

React 16 so we can take advantage of its many benefits 👍

Issue Resolved

Fixes #510

Note

To check this for errors, I recommend running rm -rf on your node_modules, checking out this branch, and then running running yarn install followed by yarn start

[sethbergman]

It should be noted that there are a few breaking changes to iron out. I'm not sure if they are / will be prominent in our repo, but it's good to know. Also, there are some polyfills to fix the problems.

• https://github.com/facebook/react/blob/master/CHANGELOG.md#breaking-changes
• https://gist.github.com/gaearon/9a4d54653ae9c50af6c54b4e0e56b583
• requestAnimationFrame warning with React 16 jestjs/jest#4545 (comment)

[kylemh]

• The first link we would've received warnings/errors for on compile time.
• The second link is problematic only for IE11 and lower. Our IE11 support is already terrible (page breaks in IE11 on our work computers #153) so... I say onward!
• The third link doesn't affect us at all since we do not have any tests.

I compiled our code-base with no issues and perused every static route. Feel free to attempt the same!

[sethbergman]

I'll go ahead and test this so we can get it merged. 🚀

[sethbergman]

I ran the following commands after pulling down your branch.
rm yarn.lock yarn-error.log
rm -rf node_modules
yarn cache clean
yarn install
yarn start
I got the following errors during build time.

[sethbergman]

Here is the error log from running yarn run build:

error-log.txt

[sethbergman]

Ok I shouldn't have run rm yarn.lock. I pulled down the one here and the build is now passing! 👍

[sethbergman]

Ok I shouldn't have run rm yarn.lock. I pulled down the one here and the build is now passing! 👍