Requires https://github.com/space-wizards/space-station-14/pull/768
- [x] Play sounds
- [x] SoundSchedules actually work
- [x] Send sound to specific users
- [x] Make existing components use SoundComponent
- [x] Add ScheduledSounds from prototypes
- [x] Add Play methods equivalent to those of AudioSystem.
- [x] Document most code.
* CEV-Eris SMES sprite as RSI.
Has been modified so that the light overlay states use alpha blending.
* Add tiny glow to SMES display sprite.
* Appearances work v2
* More WiP
* RoundToLevels works correctly on even level counts now.
* SMES -> Smes because MS guidelines.
* CEV-Eris APC sprite.
* APC visuals.
* Reduce SMES scale again to normal levels.
* Update submodule
