Update Microsoft.Windows.CppWinRT.targets (microsoft#542)

fixed typo

Use CreateFile2 and CreateFileMapping (microsoft#536)

* Use CreateFile2 and CreateFileMapping

* Address feedback w/ error handling and being more explicit

* Fix whitespace

* Use CreateFile2 and CreateFileMapping

* Address feedback w/ error handling and being more explicit

* Fix whitespace

* Use CreateFile2 and CreateFileMapping

* Address feedback w/ error handling and being more explicit

* Fix whitespace

Add C++/WinRT when_any async helper (microsoft#524)

* when_any

* test

* decay

* when_all

* when2

* first

* when_any return

* scratch

* get_return_object

Optimize C++/WinRT implementation signatures (microsoft#512)

Update README.md (microsoft#509)

removed windows release status, as it's currently manually executed