SSVLSystemAlertVolume - Access the system alert volume on Mac OS X

Age	Commit message (Collapse)	Author
2022-10-27	Build the example	Teddy Wing
	* Add a Makefile to build the example code. * Update the example to use the new function names. * Add the library to `example/` with symlinks to simulate a submodule.
2022-10-27	Add a note to add documentation	Teddy Wing

2022-10-27	SSVLGetSystemVolume: Don't return 0.5 on non-zero OSStatus	Teddy Wing
	That's what the Sound preference pane does, but I think it makes more sense to have library consumers make that decision.
2022-10-25	Update `kAudioServicesPropertySystemAlertVolume` usage	Teddy Wing

2022-10-25	Include CoreFoundation	Teddy Wing
	`Float32` and `OSStatus` are defined in CoreFoundation so we should include it.
2022-10-25	Move the `main()` function to a new example file	Teddy Wing

2022-10-25	Add a header file	Teddy Wing

2022-10-25	Rename "system_alert_volume.c" to "SSVLSystemAlertVolume.c"	Teddy Wing
	Align with the new identifier naming.
2022-10-25	Rename identifiers to align with Apple's guidelines for function naming	Teddy Wing
	Following these guidelines for naming functions: https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/CodingGuidelines/Articles/NamingFunctions.html#//apple_ref/doc/uid/20001283-BAJGGCAD and constants: https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/CodingGuidelines/Articles/NamingIvarsAndTypes.html#//apple_ref/doc/uid/20001284-1001783 Chose the prefix "SSVL" as that's the `AudioServicesPropertyID` value.
2022-10-25	Get and set system alert volume	Teddy Wing
	Extract my research code from Mass-menu.
2022-10-25	Add TODO	Teddy Wing