OnAddressChanged now loads "newValue", allows for more consistent overriding.
Extract Loading of Url from OnAddressChanged and put in Load(url) method so can be called directly if required.
Merge remote-tracking branch 'remotes/upstream/master' into fix/wpf-loadurl
Remove Address getter from IWebBrowser
Make Address private on ChromiumWebBrowser

Still allows for full data binding under MVVM as users will directly access the control in xaml, from a view model they're likely to bind through a Property that is data bound to address
and everywhere there's a reference to IWebBrowser then Load(string url) can be called in code
Merge pull request #471 from amaitland/fix/wpf-loadurl

Fix/Implement WPF Load(url) Method