ObservableCollection<T> casting bug fix
Merge branch 'master' into repeater-bug-fix
RepeaterView<T> index bug fix
event handler bug fix
Added HttpHandler with cookie callback
Geo prompt fix for Android

https://github.com/sami1971/Xamarin-Forms-Labs/commit/68ab626d944ff84dc6
e5ac677c6f1ab40d27c46e#commitcomment-8540619
Fix for iPhone6+ screen resolution
Added status code to WebResponseException
Added support for Post/Put requests without request content (not required by the spec)
Merge pull request #483 from TheXenocide/master

Simple IRestClient additions
Merge pull request #479 from gyuwon/repeater-bug-fix

Repeater bug fix
Merge master
simpler and faster