* Add isTopFrame to shouldStartLoadForRequest on iOS

onLoadingStart is not raised for inner frames, but onShouldStartLoadWithRequest still is. This keeps that behavior but adds isTopFrame to onShouldStartLoadWithRequest so that apps can perform their own filtering if desired.

* Update docs

Co-authored-by: Jamon Holmgren <jamonholmgren@gmail.com>

* Preventing an unhandled promise rejection when: a URL is loaded by the WebView, but the URL isn't in the origin whitelist, so it is handed off to the OS to handle by calling Linking.openURL(), but Linking.openURL has an error.  The code wasn't catching the error, so this would result in an unhandled promise rejection. Now the error is being caught.

* Fixing a problem where a URL is handled to the OS to deal with, via Linking.openURL, and also loaded in the WebView by making those cases mutually exclusive (they weren't previously).  In more detail: when a URL is loaded by the WebView that isn't in the origin whitelist it is handled off to the OS to handle by calling Linking.openURL.  But, if the onShouldStartLoadWithRequest prop is set, then that function would also be called, and then that would determine whether the URL should be loaded.  This can result in a situation where the URL is passed to Linking.openURL and onShouldStartLoadWithRequest returns true so it is also loaded in the WebView.  The client can fix this by duplicating the origin whitelist logic in their onShouldStartLoadWithRequest of course, but this change makes it so they don't have to.

Co-authored-by: Jason Safaiyeh <safaiyeh@protonmail.com>

* wip

* Update WebViewShared.tsx

* Update config.yml

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

fixes #466 #194

* feat(android): fix overflow issues and match iOS default render error and loading behaviour

* Use babel preset typescript through react-native instead of ts-jest

* Update yarn.lock

* Update README.md

Rewrote the whole repository into typescript. This will provide way better and up to date documentation. This should also add some safety for people contributing 😄 .
Flow types were not working until now which is why this PR doesn't have them but feel free to PR.

This also fixes #384 #435 #206 #171 #168.

* 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

This PR adds support for `onShouldStartLoadWithRequest` on android.

The initial PR was #59

The issue for this PR is: #106

fixes #106