New Features:
- Added `GetSourceFilterKindList` request
- Added `GetSceneItemSource` request
- Added `InputSettingsChanged` event
- Added `SourceFilterSettingsChanged` event
- Added UUID support to Sources (Inputs/Scenes), Inputs, Scenes,
Transitions
  - The `Source` requests/events use `sourceUuid`
  - The `Input` requests/events use `inputUuid`
  - The `Scene` requests/events use `sceneUuid`
  - The `Transition` requests/events use `transitionUuid`
  - Filters do not have support for UUIDs at this time.

Enhancements:
- Added `contextName` field to `TriggerHotkeyByName` (exeldro)

Bug Fixes:
- Fixed a crash on shutdown with notifications enabled (r1ch)
- Added safety check to prevent `null` `outputCongestion` values in
`GetStreamStatus`
- Fixed a memory leak when switching service kinds via
`SetStreamServiceSettings`

Other Notes:
- Documented missing `outputActive` `ToggleRecord` response field
- Added a few new client softwares to the README list
- Removed a mis-documented `imageData` field
- Added a note to the hotkey requests that they are as-is and we
will not provide support for them