Implement Playlist functionality. My god...

Too many changes to summarize.

- Fixes #2.
- Fixes #3.
- Fixes #5.
- Fixes #7.

Start work on uncrustify config.

.vscode/launch.json

@@ -14,7 +14,7 @@
 			"cwd": "${workspaceFolder}",
 			"environment": [
 				{"name" : "G_MESSAGES_DEBUG", "value": "all" },
-				{ "name": "GTK_THEME", "value": "Default:dark" }
+				{ "name": "GTK_THEME", "value": "Adwaita:dark" }
 			],
 			"externalConsole": false,
 			"MIMode": "gdb",
@@ -37,7 +37,7 @@
 			"cwd": "${workspaceFolder}",
 			"environment": [
 				{"name" : "G_MESSAGES_DEBUG", "value": "all" },
-				{ "name": "GTK_THEME", "value": "Default:dark" }
+				{ "name": "GTK_THEME", "value": "Adwaita:dark" }
 			],
 			"externalConsole": false,
 			"linux": {

.vscode/settings.json

@@ -1,5 +1,10 @@
 {
 	"files.associations": {
-		"glib.h": "c"
+		"glib.h": "c",
+		"ios": "c",
+		"__node_handle": "c",
+		"gtk.h": "c",
+		"gtktreeview.h": "c",
+		"cartographer.h": "c"
 	}
 }