Add http::get function with request and response header params.
Set a 30 s connection timeout for all http requests (except on macOS).
Linux tests with postb.in
Adds UWP protocol activation support for ROM loading from UWP Frontends/Browsers, allows launching ROMs via SDL's `SDL_WinRTGetProtocolActivationURI()` and redirection using the 'launchOnExit' URI parameter from protocol activation in SDL_WinRTApp, Closing a Rom/Game from the quick menu or closing the app will make use of `launchOnExit` and redirect to the specified app
Implements launching a URI via Windows.System.Launcher after the game is stopped from the Exit button in the quick menu, enabling return to sender/redirection on UWP
Update SDL submodule to include SDL_WinRTGetProtocolActivationURI()
Flyinghead