Apple required us to remove this (see #819)
BREAKING CHANGE: UIWebView has been removed
BREAKING CHANGE: useWebkit prop removal
BREAKING CHANGE: scalesPageToFit prop removal on iOS (since it's not compatible with WKWebview)
BREAKING CHANGE: Renamed RNCWKWebView to RNCWebView on iOS
* Change origin whitelist to allow for all valid URIs
- Now supports +, -, and .
- Prevent whitelist from matching when preceded by unwanted characters
- URI must begin with letter
- URI Scheme syntax: https://tools.ietf.org/html/rfc3986#section-3.1
* Add jest testing framework and run it on CI
* Add tests for WebViewShared's createOnShouldStartLoadWithRequest