This is a stable bugfix release, with the following changes:

• Added SDL_PROP_WINDOW_CREATE_CONSTRAIN_POPUP_BOOLEAN to support non-constrained and non-grabbing popups
• Fixed a crash in SDL_GetAudioDeviceChannelMap()
• Fixed a crash on older Proton runtimes
• Fixed unregistering raw input on Windows
• Fixed duplicate mouse events when using a pen under X11
• Handle quirks with window management on XMonad and fvwm
• Fixed showing the dock briefly at launch on macOS
• Fixed replacing existing gamepad mappings at runtime
• Improved thumbstick range for Nintendo Switch Pro Controllers
• Fixed loading user calibration for Nintendo Switch Pro Controllers
• Added support for the ZEROPLUS P4 Wired Gamepad
• Fixed input from the MayFlash GameCube adapter with version 7 firmware
• Added support for the NACON Revolution X Unlimited controller over Bluetooth on macOS