SDL: Updated WhatsNew with major changes for 2.0.16

From d784dd20b63352f1a7e4de80740443df22b78101 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Sat, 31 Jul 2021 17:53:07 -0700
Subject: [PATCH] Updated WhatsNew with major changes for 2.0.16

 WhatsNew.txt | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/WhatsNew.txt b/WhatsNew.txt
index 04c8758825..5e1a4f8390 100644
--- a/WhatsNew.txt
+++ b/WhatsNew.txt
@@ -1,6 +1,45 @@
 This is a list of major changes in SDL's version history.
+* Added SDL_FlashWindow() to get a user's attention
+* Added SDL_GetAudioDeviceSpec() to get the preferred audio format of a device
+* Added SDL_SetWindowAlwaysOnTop() to dynamically change the SDL_WINDOW_ALWAYS_ON_TOP flag for a window
+* Added SDL_SoftStretchLinear() to do bilinear scaling between 32-bit software surfaces
+* Added SDL_UpdateNVTexture() to update streaming NV12/21 textures
+* Added SDL_GameControllerSendEffect() and SDL_JoystickSendEffect() to allow sending custom trigger effects to the DualSense controller
+* Added SDL_GameControllerGetSensorDataRate() to get the sensor data rate for PlayStation and Nintendo Switch controllers
+* Added support for the Amazon Luna game controller
+* Added rumble support for the Google Stadia controller using the HIDAPI driver
+* Added SDL_GameControllerType constants for the Amazon Luna and Google Stadia controllers
+* Added analog rumble for Nintendo Switch Pro controllers using the HIDAPI driver
+* Reduced CPU usage when using SDL_WaitEvent() and SDL_WaitEventTimeout()
+* Added SDL_SetWindowsMessageHook() to set a function that is called for all Windows messages
+* Added SDL_RenderGetD3D11Device() to get the D3D11 device used by the SDL renderer
+* Greatly improved Wayland support
+* Added support for audio output and capture using Pipewire
+* Added the hint SDL_HINT_AUDIO_INCLUDE_MONITORS to control whether PulseAudio recording should include monitor devices
+* Added the hint SDL_HINT_AUDIO_DEVICE_STREAM_ROLE to describe the role of your application for audio control panels
+* Added support for audio output and capture using AAudio
+* Added SDL_AndroidShowToast() to show a lightweight notification
+* Added support for mouse relative mode on iOS 14.1 and newer
+* Added support for the Xbox Series X controller
+* Added support for the Xbox Series X controller